Hằng đẳng thức
Authored by Suong Pham
Mathematics
8th Grade
Used 515+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
x2 - 4x +4
(x + 1)2
(2 + x)2
(x - 1)3
(x - 2)2
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
(3x - 1) (3x + 1) = ...
(3x - 1)2
9x2 - 1
3x2 -1
(3x + 1)2
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
x2 + 2xy + y2 = (x - y)2
Đúng
Sai
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(x2 - 2)(x4 + 2x2 + 4) = ...
(x - 2)3
(x - 2)2
x6 - 8
x3 - 8
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
-x3 + 6x2 - 12x + 8 = ...
(x -2)3
x3 - 8
x3 + 8
(2 - x )3
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(-y2 + 3x)3 = 27x3 - 27x2y2 + 9xy4 - y6
Đúng
Sai
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Tìm x để (x + 2)2 - 9 =0
-5
5
1
-1
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