a3(x-y)-3a2b(y-x)因式分解为_.
问题描述:
a3(x-y)-3a2b(y-x)因式分解为______.
答
a3(x-y)-3a2b(y-x)=a3(x-y)+3a2b(x-y)=a2(x-y)(a-3b).
故答案为:a2(x-y)(a-3b).