5(x-y)3+10(y-x)2.(提公因式法)

问题描述:

5(x-y)3+10(y-x)2.(提公因式法)

5(x-y)3+10(y-x)2
=5(x-y)3+10(x-y)2
=5(x-y)2[(x-y)+2]
=5(x-y)2(x-y+2).