数学x^n*x^n+1+x^2n*x在线等.
问题描述:
数学x^n*x^n+1+x^2n*x在线等.
答
x^n*x^n+1+x^2n*x
=x^(2n+1)+x^(2n+1)
=2x^(2n+1)