计算:(a^n+1)^2×(-a^3)^2n+1
问题描述：
计算:(a^n+1)^2×(-a^3)^2n+1
答
(a^n+1)^2×(-a^3)^2n+1
=a^(2n+2)×[-a^(6n+3)]
=-a^(2n+2+6n+3)
=-a^(8n+5)