(x-y)²-(y-x)因式分解为?

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(x-y)²-(y-x)因式分解为?(x-y)²-(y-x)因式分解为?(x-y)²-(y-x)因式分解为?原式(y-x)²-(y-x)=(y-x)(y-x-1

(x-y)²-(y-x)因式分解为?
(x-y)²-(y-x)因式分解为?

(x-y)²-(y-x)因式分解为?
原式(y-x)²-(y-x)
=(y-x)(y-x-1)