(y-x)²+2x-2y因式分解
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(y-x)²+2x-2y因式分解
(y-x)²+2x-2y因式分解
(y-x)²+2x-2y因式分解
(y-x)^2+2x-2y
=(x-y)^2+2(x-y)
=(x-y)(x-y+2)
(y-x)²+2x-2y=(y-x)^2-2(y-x)=(y-x)(y-x-2)
(y-x)²+2x-2y
=(x-y)²+2﹙x-y﹚
=﹙x-y﹚﹙x-y﹢2﹚
原式=(x-y)²+2(x-y)
=(x-y)(x-y+2)