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(x-1)(x-2)-2(2-x)的二次方
分解因式
人气:386 ℃ 时间:2020-05-27 18:00:24
解答
(x-1)(x-2)-2(2-x)的二次方
=(x-1)(x-2)-2(x-2)的二次方
=(x-2)[x-1-2(x-2)]
=(x-2)(-x+3)
=-(x-2)(x-3)
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