计算3*(-3)^2n+(-3)^2n+13*(-3)^2n+(-3)^2n+1(n是正整数)

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计算3*(-3)^2n+(-3)^2n+13*(-3)^2n+(-3)^2n+1(n是正整数)计算3*(-3)^2n+(-3)^2n+13*(-3)^2n+(-3)^2n+1(n是正整数)计算3*(-

计算3*(-3)^2n+(-3)^2n+13*(-3)^2n+(-3)^2n+1(n是正整数)
计算3*(-3)^2n+(-3)^2n+1
3*(-3)^2n+(-3)^2n+1(n是正整数)

计算3*(-3)^2n+(-3)^2n+13*(-3)^2n+(-3)^2n+1(n是正整数)
=0呀,3*(-3)^2n+(-3)^(2n+)=-(-3)*(-3)^2n+(-3)^(2n+1)
=-(-3)^(2n+1)+(-3)^(2n+1)=0

要求的是什么?

这个还用算啊?用眼睛看就有答案了啊!
前面的是 :3*(-3)^2n=-3^2n+1