分解因式:(x-y)3-(y-x)2=(x-y)2乘以多少?

问题描述:

分解因式:(x-y)3-(y-x)2=(x-y)2乘以多少?

(x-y)×3-(y-x)×2=(x-y)×3-[-(x-y)]×2=(x-y)×3+(x-y)×2=5(x-y)