(-x)³·x^2n-1+x^2n·(-x)²

问题描述:

(-x)³·x^2n-1+x^2n·(-x)²

能写好些吗 看不明白 建议写在纸上 照下来 发到这

(-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
我爸爸说的哦......

(-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