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x方(x-y)+(y方-x方)因式分解
人气:111 ℃ 时间:2020-05-09 03:55:07
解答
x²(x-y)+(y²-x²)
=x²(x-y)+(y+x)(y-x)
=x²(x-y)-(x+y)(x-y)
=(x-y)[x²-(x+y)]
=(x-y)(x²-x+y)
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