题目内容
分解因式x4-x2的结果是( )
A.(x2+x)(x2-x) | B.x2(x2-1) | C.x2(x+1)(x-1) | D.(x2+x)(x+1)(x-1) |
x4-x2
=x2(x2-1)
=x2(x+1)(x-1),
故选:C.
=x2(x2-1)
=x2(x+1)(x-1),
故选:C.
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