x(a-x)(a-y)-y(x-a)(y-a)怎么因式分解

问题描述:

x(a-x)(a-y)-y(x-a)(y-a)怎么因式分解

x(a-x)(a-y)-y(x-a)(y-a)
=x(a-x)(a-y)-y(a-x)(a-y)
=(a-x)(a-y)(x-y)