1.2. Nhân đa thức với đa thức | Học thật tốt

Trang chủ LỚP 8 Toán cơ bản Luyện tập CHƯƠNG I. PHÉP NHÂN VÀ PHÉP CHIA CÁC ĐA THỨC 1.2. Nhân đa thức với đa thức

1.2. Nhân đa thức với đa thức

Bắt đầu

1.2. Nhân đa thức với đa thức

Chọn đáp án đúng nhất

Giá trị của biểu thức không phụ thuộc vào giá trị biến . ĐÚNG hay SAI?

A. ĐÚNG

Bạn đã trả lời đúng | Đáp án đúng:
A. ĐÚNG

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Đáp án chi tiết

Ta có:

Giá trị của không phụ thuộc vào biến .

Vậy đáp án đúng là A.

Gợi ý

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Ôn lý thuyết Câu hỏi tiếp theo

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14 lượt trả lời

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29% trả lời sai

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Báo lỗi

Điền đáp án thích hợp vào chỗ trống

Giá trị của biểu thức tại là:

Đáp án: A =

Bạn đã trả lời đúng | Đáp án đúng:

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" alt="" />

Đáp án chi tiết

Ta rút gọn biểu thức đã cho:

Thay vào A, ta được:

Vậy số cần điền là -140.

Gợi ý

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9 lượt trả lời

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100% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

Điền đáp án thích hợp vào chỗ trống

Biết

Khi đó giá trị của

Đáp án:

1

Bạn đã trả lời đúng | Đáp án đúng: 1

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Đáp án chi tiết

Ta có:

Đồng nhất hệ số vế trái với vế phải ta có:

Suy ra

Khi đó

Vậy số cần điền là 1.

Gợi ý

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Trả lời Ôn lý thuyết

Ôn lý thuyết Câu hỏi tiếp theo

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3 lượt trả lời

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100% trả lời sai

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Lưu bài tập

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Ghi chú

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" alt="" />

Báo lỗi

Chọn đáp án đúng nhất

Biểu thức luôn chia hết cho 5 với mọi

ĐÚNG hay SAI?

A. ĐÚNG

Bạn đã trả lời đúng | Đáp án đúng:
A. ĐÚNG

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" alt="" />

Đáp án chi tiết

Ta có:

Do với mọi

Gợi ý

Bước 1: Ta biến đổi và rút gọn biểu thức, sử dụng công thức: và
Bước 2: Nhận định kết quả đã rút gọn xem có chứa thừa số chia hết cho $5$ không.
+ Nếu có chứa thừa số chia hết cho $5$ thì biểu thức đã cho chia hết cho $5$ .
+ Nếu không chứa thừa số chia hết cho $5$ thì biểu thức đã cho không chia hết cho $5$ .

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2 lượt trả lời

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100% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

Chọn đáp án đúng nhất

Đa thức vô nghiệm.

ĐÚNG hay SAI?

A. ĐÚNG

Bạn đã trả lời đúng | Đáp án đúng:
A. ĐÚNG

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" alt="" />

Đáp án chi tiết

Ta có:

Do với mọi .

Do đó f(x) vô nghiệm.

Vậy đáp án đúng là A.

Gợi ý

Bước 1: Cho .
Bước 2: Biến đổi, rút gọn từng bước để tìm .

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Trả lời Ôn lý thuyết

Ôn lý thuyết Câu hỏi tiếp theo

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1 lượt trả lời

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100% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

Chọn đáp án đúng nhất

Kết quả của phép nhân là:

A.
B.
C.
D.

A.

Bạn đã trả lời đúng | Đáp án đúng:
A.

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Đáp án chi tiết

Ta có:

Vậy đáp án đúng là A.

Gợi ý

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3 lượt trả lời

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33% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

Chọn đáp án đúng nhất

Kết quả của phép nhân là:

A.
B.
C.
D.

C.

Bạn đã trả lời đúng | Đáp án đúng:
C.

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" alt="" />

Đáp án chi tiết

Ta có:

Vậy đáp án đúng là: C.

Gợi ý

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Trả lời Ôn lý thuyết

Ôn lý thuyết Câu hỏi tiếp theo

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3 lượt trả lời

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67% trả lời sai

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Lưu bài tập

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Ghi chú

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" alt="" />

Báo lỗi

Điền đáp án thích hợp vào chỗ trống

Giá trị của biểu thức tại là:

Đáp án:

3

Bạn đã trả lời đúng | Đáp án đúng: 3

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" alt="" />

Đáp án chi tiết

Thay vào biểu thức , ta được:

Vậy số cần điền là 3.

Gợi ý

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/suggest-icon.png" alt="" />

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Trả lời Ôn lý thuyết

Ôn lý thuyết Câu hỏi tiếp theo

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3 lượt trả lời

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100% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

Điền đáp án thích hợp vào chỗ trống

Biểu thức có bậc là bao nhiêu?

Đáp án:

6

Bạn đã trả lời đúng | Đáp án đúng: 6

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" alt="" />

Đáp án chi tiết

Ta thực hiện phép nhân:

Đa thức thu được có bậc là 6.

Vậy số cần điền là 6.

Gợi ý

Bước 1: Ta nhân đa thức với đa thức, sử dụng công thức:
Bước 2: Sắp xếp kết quả theo lũy thừa giảm dần và sau đó nhận định bậc của đa thức thu được.

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Trả lời Ôn lý thuyết

Ôn lý thuyết Câu hỏi tiếp theo

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3 lượt trả lời

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33% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

Chọn đáp án đúng nhất

Biểu thức là đa thức bậc 7 ĐÚNG hay SAI?

A. ĐÚNG

Bạn đã trả lời đúng | Đáp án đúng:
A. ĐÚNG

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Đáp án chi tiết

Ta có:

Đa thức thu được có bậc là 7.

Vậy đáp án đúng là: A.

Gợi ý

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3 lượt trả lời

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" alt="" />

33% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

Chọn đáp án đúng nhất

Tích có kết quả bằng:

A.
B.
C.
D.

C.

Bạn đã trả lời đúng | Đáp án đúng:
C.

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" alt="" />

Đáp án chi tiết

Gợi ý

Ta có:

Vậy đáp án đúng là: C.

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Trả lời Ôn lý thuyết

Ôn lý thuyết Câu hỏi tiếp theo

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3 lượt trả lời

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0% trả lời sai

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Lưu bài tập

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Ghi chú

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/error-icon.png" alt="" />

Báo lỗi

Chọn đáp án đúng nhất

Tích có kết quả bằng:

A.
B.
C.
D.

B.

Bạn đã trả lời đúng | Đáp án đúng:
B.

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Đáp án chi tiết

Ta có:

Gợi ý

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Trả lời Ôn lý thuyết

Ôn lý thuyết Câu hỏi tiếp theo

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/quesiton-icon.png" alt="" />

3 lượt trả lời

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/remove-icon.png" alt="" />

33% trả lời sai

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/download-icon.png" alt="" />

Lưu bài tập

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/note-icon.png" alt="" />

Ghi chú

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Báo lỗi

Chọn đáp án đúng nhất

Kết quả rút gọn của biểu thức là:

D. Kết quả khác

Bạn đã trả lời đúng | Đáp án đúng:
D. Kết quả khác

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" alt="" />

Đáp án chi tiết

Ta có:

Vậy đáp án đúng là: D.

Gợi ý

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Trả lời Ôn lý thuyết

Ôn lý thuyết Câu hỏi tiếp theo

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3 lượt trả lời

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33% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

Chọn đáp án đúng nhất

Thực hiện phép tính ta có kết quả là:

A.
B.
C.
D.

C.

Bạn đã trả lời đúng | Đáp án đúng:
C.

<img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" data-src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img src="https://hocthattot.com/wp-content/themes/hocthattot/images/icon-check.png" alt="" />

Đáp án chi tiết

Ta có:

Gợi ý

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Trả lời Ôn lý thuyết

Ôn lý thuyết Câu hỏi tiếp theo

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3 lượt trả lời

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67% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

Chọn đáp án đúng nhất

Kết quả của phép tính bằng:

A.
B.
C.
D.

B.

Bạn đã trả lời đúng | Đáp án đúng:
B.

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Đáp án chi tiết

Ta có:

Gợi ý

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Trả lời Ôn lý thuyết

Ôn lý thuyết Hoàn thành

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2 lượt trả lời

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0% trả lời sai

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Lưu bài tập

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Ghi chú

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Báo lỗi

60

Chúc mừng bạn vừa hoàn thành 15 câu hỏi Luyện tập

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Số câu hỏi trả lời sai:

Ôn lý thuyết Tiếp tục Danh mục luyện tập

Thời gian

00:00:00

Số câu đã làm

0/15

Số điểm đạt được

0