xy³-2x²y²+x³y怎么解啊~

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xy³-2x²y²+x³y怎么解啊~xy³-2x²y²+x³y怎么解啊~xy³-2x²y²

xy³-2x²y²+x³y怎么解啊~
xy³-2x²y²+x³y怎么解啊~

xy³-2x²y²+x³y怎么解啊~
原式=xy(y^2-2xy+x^2).
=xy(x^2-2xy+y^2).
=xy(x-y)^2.