x(x－y)－y(y－x)＋（x－y）²因式分解
2个回答
x(x－y)－y(y－x)＋（x－y）²
=x(x－y)+y(x-y)＋（x－y）²
=（x-y）[x+y+(x-y)]
=(x-y)(2x)
=2x(x-y)
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