Question

2^2n-3+2^2n-2如何化简成3/2×2^2n-2

Answer 1

2^(2n-3)+2^(2n-2)

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

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

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

=3/2*2^(2n-2)