因式分解:x2(x-y)+y2(y-x)
问题描述:
因式分解:x2(x-y)+y2(y-x)
答
原式=x2(x-y)-y2(x-y)
=(x-y)(x2-y2)
=(x-y)(x+y)(x-y)
=(x-y)2(x+y).