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]
答
=-6(x+y)的5次方+16(x+y)的5次方
=10(x+y)的5次方