(-x)∧3×x∧2n-1+x∧2n×(-x)∧2(要过程)

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(-x)∧3×x∧2n-1+x∧2n×(-x)∧2(要过程)

(-x)∧3×x∧2n-1+x∧2n×(-x)∧2(要过程)
(-x)∧3×x∧2n-1+x∧2n×(-x)∧2(要过程)

(-x)∧3×x∧2n-1+x∧2n×(-x)∧2(要过程)
(-x)^3×x^2n-1+x^2n×(-x)^2
=-(x)^3×x^2n-1+x^2n×(x)^2
=-x^2n+2+x^2n+2
=0

(-x)∧3×x∧2n-1+x∧2n×(-x)∧2
= -(x)∧3×x∧2n-1+x∧2n×(x)∧2
=-x^(3+2n-1)+x^(2n+2)
=-x^(2n+2)+x^(2n+2)
=0