计算: [(x+y)^2n]^4/(-x-y)^(2n)
问题描述:
计算: [(x+y)^2n]^4/(-x-y)^(2n)
答
[(x+y)^2n]^4/(-x-y)^(2n)
=[(x+y)^2n]^4/(x+y)^(2n)
=(x+y)^(8n)/(x+y)^(2n)
=(x+y)^4