
Đa thức và hình học
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Mathematics
8th Grade
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46 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thực hiện phép nhân x(y-x) ta được:
x2-y
x-xy
xy-x2
x2-xy
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kết quả của phép chia 4x2y5z : x2y2 là
2zy3
4y3z
4xy3
2xy
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phân tích đa thức thành nhân tử: x2+9-4y2-6x
(x - 2y - 9)(x +2 y - 9)
(x - 2y - 3)(x -2 y - 3)
(x - 2y - 3)(x + 2y - 3)
(x + 3 - 2y)(x - 3 +2 y)
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Biết 4x(9-x2)=0 thì các giá trị của x tìm được là:
0; 3; 5
0; 3
-3; 0; 3
0; -3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để biểu thức x2+6x+m là bình phương của 1 tổng thì giá trị m là:
-9
-6
1
9
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phân tích đa thức thành nhân tử: 4x2-9-y2-6y
(2x + y + 3)(2x - y + 3)
(4x + y + 3)(4x - y - 3)
(2x + y + 3)(2x - y - 3)
(2x + y + 3)(2x + y - 3)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kết quả phép chia (4x5-8x3):(2x3)là:
-2x2-4
-2x2+4
2x2-4
2x-4
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