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把多项式x²-x+y-y²分解因式
人气:360 ℃ 时间:2020-03-25 05:23:08
解答
x²-x+y-y²
= x²-y²-(x-y)
= (x+y)(x-y)-(x-y)
=(x-y)(x+y-1)
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