Question

求 2^4n+1-(4^2n-1+16^n) 的值

Answer 1

2^（4n+1）-【4^（2n-1）+16^n)】

=2*4^2n-4^(2n-1)-4^2n

=4^2n-4^(2n-1)

=(4-1)*4^(2n-1)

=3*4^(2n-1)