Question

40^n+5/2^3n+11*5^n+4

Answer 1

$frac{{40}^{n+5}}{{2}^{3n+11}*{5}^{n+4}}=frac{{2}^{3n+15}*{5}^{n+5}}{ {2}^{3n+11}*{5}^{n+4} }={2}^{3n+15-3n-11}*{5}^{n+4-n-4}={2}^{4}*5=80$