(3x^n)^2+(x^2)^n-10x^n*x^2=?
问题描述:
(3x^n)^2+(x^2)^n-10x^n*x^2=?
答
(3x^n)^2+(x^2)^n-10x^n*x^2
=9x^(2n)+x^(2n)-10x^(n+2)
=10x^(2n)-10x^(n+2)