x^2(x-2y)+y^2(2y-x)因式分解
问题描述：
x^2(x-2y)+y^2(2y-x)因式分解
答
x^2(x-2y)-y^2(x-2y)
=(x-2y)(x^2-y^2)
=(x-2y)(x+y)(x-y)