Câu 1: Chọn hai đa thức P(x) và Q(x) sao cho
P(x) + Q(x) = x2 + 1
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Quiz
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Mathematics
•
7th Grade
•
Hard
Trần Thanh
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Chọn hai đa thức P(x) và Q(x) sao cho
P(x) + Q(x) = x2 + 1
A. P(x) = x2; Q(x) = x + 1
B. P(x) = x2 + x; Q(x) = x + 1
C. P(x) = x2; Q(x) = -x + 1
D. P(x) = x2 - x; Q(x) = x + 1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2:
Cho f(x) = x5 - 3x4 + x2 - 5
và g(x) = 2x4 + 7x3 - x2 + 6.
Tìm hiệu f(x) - g(x) rồi sắp xếp kết quả theo lũy thừa tăng dần của biến ta được:
A. 11 + 2x2 + 7x3 - 5x4 + x5
B. -11 + 2x2 - 7x3 - 5x4 + x5
C. x5 - 5x4 - 7x3 + 2x2 - 11
D. x5 - 5x4 - 7x3 + 2x2 + 11
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: Tìm đa thức h(x) biết f(x) - h(x) = g(x) biết
f(x) = x2 + x + 1;
g(x) = 4 - 2x3 + x4 + 7x5
A. h(x) = -7x5 - x4 + 2x3 + x2 + x - 3
B. h(x) = 7x5 - x4 + 2x3 + x2 + x + 3
C. h(x) = -7x5 - x4 + 2x3 + x2 + x + 3
D. h(x) = 7x5 + x4 + 2x3 + x2 + x + 3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Tìm hệ số cao nhất của đa thức k(x) biết f(x) + k(x) = g(x)
và f(x) = x4 - 4x2 + 6x3 + 2x - 1;
g(x) = x + 3
A. -1
B. 1
C. 4
D. 6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hiệu của hai đa thức và là:
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tìm đa thức biết:
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