计算:2(x+y)²[3(-x-y)³]+[2(x+y)]³[2(-x-y)²]

问题描述:

计算:2(x+y)²[3(-x-y)³]+[2(x+y)]³[2(-x-y)²]

=-6(x+y)的5次方+16(x+y)的5次方
=10(x+y)的5次方