计算(-x)^2n十1.(-x)^n+1
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计算(-x)^2n十1.(-x)^n+1
计算(-x)^2n十1.(-x)^n+1
计算(-x)^2n十1.(-x)^n+1
(-x)^2n十1.(-x)^n+1
=(-x)^3n+2
= -x^3n+2
计算(-x)^2n十1.(-x)^n+1
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