(x-y)^2-(y-x) 因式分解
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(x-y)^2-(y-x)
=﹙x-y﹚²+﹙x-y﹚
=﹙x-y﹚﹙x-y+1﹚
=﹙x-y﹚²+﹙x-y﹚
=﹙x-y﹚﹙x-y+1﹚
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(x-y)^2-(y-x)
=(x-y)(x-y)+(x-y)
=(x-y)(x-y+1)
=(x-y)(x-y)+(x-y)
=(x-y)(x-y+1)
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(x-y)^2-(y-x)
=(x-y)²+(x-y)
=(x-y)(x-y+1)
=(x-y)²+(x-y)
=(x-y)(x-y+1)
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