Question

Como simplificar $\frac{(n+2)!}{(n-1)!}$

Answer 1

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