作业帮因式分解x^2(x-y)-4xy(x-y)-4y^2(y-x)
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因式分解x^2(x-y)-4xy(x-y)-4y^2(y-x)
因式分解x^2(x-y)-4xy(x-y)-4y^2(y-x)
因式分解x^2(x-y)-4xy(x-y)-4y^2(y-x)
x^2(x-y)-4xy(x-y)-4y^2(y-x)
=x^2(x-y)-4xy(x-y)+4y^2(x-y)
=（x-y）（x²-4xy+4y²）
=（x-y）（x-2y）²
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