Question

Simplifique (n-2)!/(n+1)!

Answer 1

Explicação passo-a-passo:

$\frac{(n-2)!}{(n+1)!} =\frac{(n-2)!}{(n+1).n.(n-1).(n-2)!}=\frac{1}{(n+1).n.(n-1)}$