
Trắc Nghiệm về Hằng đẳng thức và phân tích đa thức thành nhân ử

Quiz
•
Mathematics
•
8th Grade
•
Hard
C23 Viet
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hằng đẳng thức bình phương một hiệu là
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
x2- 2 xy + y2 bằng:
x2 + y2
(x - y)2
y2 - x2
x2 - y2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hằng đẳng thức hiệu hai bình phương là
A2 - B2 = (A + B). (A - B)
A2 + B2 = (A + B). (A - B)
A2 - B2 = (A - B). (A - B)
A2 - B2 = (A + B). (A + B)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Khai triển (2x−3y)2 ta được
4x2−12xy+9y2
4x2−12xy+9y2
4x2−24xy−9y2
9x2−6xy+16y2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Khai triển hằng đẳng thức 9x2 - 16 ta được
(3x)2 - 42 ;
(3x + 4)(3x - 4);
(3x + 4)(3x + 4);
(3x - 4)(3x - 4)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Phân tích đa thức 7x - 14 thành nhân tử, ta được:
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