Question

SIMPLIFIQUE

n ! / (n – 2)! =n!/(n-2)! =

n (n + 1)! / (n + 2)!=

me ajudem prfvr
​

Answer 1

Resposta:

n(n - 1)

$\frac{n}{n+2}$

Explicação passo a passo:

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

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