因式分解:x2(x-y)+y2(y-x)
人气:492 ℃ 时间:2019-12-14 05:20:29
解答
原式=x2(x-y)-y2(x-y)
=(x-y)(x2-y2)
=(x-y)(x+y)(x-y)
=(x-y)2(x+y).
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