Question

因式分解x²y（x-y）²-2xy（y-x）³的结果为______．

Answer 1

x²y（x-y）²-2xy（y-x）³，
=x²y（x-y）²+2xy（x-y）³，
=xy（x-y）²[x+2（x-y）]，
=xy（x-y）²（3x-2y）．