[(x+y)^2n]^4/(-x-y)^(2n+1)计算快

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[(x+y)^2n]^4/(-x-y)^(2n+1)计算快[(x+y)^2n]^4/(-x-y)^(2n+1)计算快[(x+y)^2n]^4/(-x-y)^(2n+1)计算快[(x+y)^2n]^4/

[(x+y)^2n]^4/(-x-y)^(2n+1)计算快
[(x+y)^2n]^4/(-x-y)^(2n+1)计算
快

[(x+y)^2n]^4/(-x-y)^(2n+1)计算快
[(x+y)^2n]^4/(-x-y)^(2n+1)
=[(x+y)^2n]^4/-(x+y)^(2n+1)
=-(x+y)^[8n-(2n+1)]
=-(x+y)^(6n-1)