a^n+2-a^n的因式分解

问题描述:

a^n+2-a^n的因式分解

a^n+2-a^n=a^n*a^2-a^n=a^n(a^2-1)=a^n(a-1)(a+1)

a^(n+2)-a^n
=a^n*a^2-a^n
=a^n(a^2-1)
a^n(a+1)(a-1)

a^(n+2)-a^n
=a^n(a^2-1)
=a^n(a+1)(a-1)