配套习题- 用公式法分解因式 -【青果学苑】

1/5单选题

难度：

1.下列多项式中，能用公式法进行因式分解的是（　　）

A
B
C
D

正确答案：Qg==

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

2/5单选题

难度：

2.下列各式中，能用平方差公式分解因式的是（）

A
B
C
D

正确答案：QQ==

6Kej562U77ya4oi1QS4gPGltZyB3aWR0aD01NyBoZWlnaHQ9MjAgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9FNi9yQkFDSjFUSWxsX0NlSWluQUFBQnpaYzVmMEk5OTMucG5nIj49PGltZyB3aWR0aD0yNjcgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjMvckJBQ0ZGVElsbC1SUmw1cEFBQURxUUhtY2Y0OTAxLnBuZyI+PGJyPuaVhemAiUE=

3/5单选题

难度：

3.下列多项式不能用完全平方公式分解的是（）

A	a²+ab＋b²
B	a²－6a＋36
C	－4x²+12xy－9y²
D	x²+x＋

正确答案：Qg==

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

4/5单选题

难度：

4.的结果为（　　）

A
B
C
D

正确答案：Qw==

6Kej562U77ya4oi1PGltZyB3aWR0aD00MCBoZWlnaHQ9MjIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9FNi9yQkFDSjFUSWxtS0RiR0g1QUFBQmRjRkI5TjA1ODUucG5nIj48Yj49PGltZyB3aWR0aD05NiBoZWlnaHQ9MjUgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC83My8xQi9yQkFDRTFUSWxtTHhfRXV6QUFBQ2NqclItX0EyNTcucG5nIj49PGltZyB3aWR0aD0xMjggaGVpZ2h0PTI1IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjMvckJBQ0ZGVElsbUtpWldYVEFBQUN5eWVZSGZvMTExLnBuZyI+PC9iPjxicj48Yj7mlYXpgIk8L2I+PGI+QzwvYj4=

5/5单选题

难度：

5.已知x²－y²=－1 ， x+y=

，则x－y=（）

A	2
B	2
C	1
D	1

正确答案：Qg==

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