
KT TX lan 2 7B_CHƯƠNG VII
Authored by Tuấn Nguyễn
Science
7th Grade
Used 1+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Trong tập hợp { - 1; 0; 1}, tìm những số là nghiệm của một trong hai đa thức
S(x) =−2x4 − x3 + 5x và D(x) = 6x5 − 2x4 + x3 + 14x2 + x − 20
2.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Cho đa thức P(x) = x2 + 5x − 6. Khi đó:
3.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Biểu thức nào sau đây không là đa thức một biến?
4.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Thu gọn và sắp xếp đa thức sau theo lũy thừa giảm của biến 4x3 − 5x2 + x − 4x3 + 3x2 − 2x + 6
2x2 − x + 6
−2x2 − x + 6
−2x2 + x + 6
−2x2 − x − 6
5.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Tìm bậc, hệ số cao nhất và hệ số tự do của đa thức −x5 + 2x2 − x + 3
6.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Tìm bậc, hệ số cao nhất và hệ số tự do của đa thức: −2x2 − x + 6
7.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Cho hai đa thức sau:
P(x) = 3x5 − 2x4 + 7x2 + 3x − 10 và
Q(x) = −3x5 − x3 − 7x2 + 2x + 10.
Tính đa thức S (x) biết S(x) = P(x) + Q(x)
− 2x4 − x3 + 5x
− 2x4 + x3 + 5x
− 2x4 − x3 − 5x
2x4 − x3 + 5x
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