1、x^3(a-2b)+x^2(2b-a)
=X³(a-2b)-X²(a-2b)
=X²(a-2b)(X-1)
2、3x(x-y)^3-6xy(y-x)^3
=3x(x-y)³+6xy(x-y)³
=3x(x-y)³(1+2y)
有什么不懂的可以追问、
1、x^3(a-2b)+x^2(2b-a)
=X³(a-2b)-X²(a-2b)
=X²(a-2b)(X-1)
2、3x(x-y)^3-6xy(y-x)^3
=3x(x-y)³+6xy(x-y)³
=3x(x-y)³(1+2y)
有什么不懂的可以追问、