分解因式:a³(x-y)-3a²b(y-x)=
问题描述:
分解因式:a³(x-y)-3a²b(y-x)=
答
a³(x-y)-3a²b(y-x)=a³(x-y)+3a²b(x-y)
=(a³+3a²b)(x-y)
=a²(a+3b)(x-y)