Question

Simplifique:


$\frac{(n+3)!}{(n-2)!} . \frac{(n-1)!}{(n+2)!}$

Com passo à passo

Answer 1

(n+3)! (n-1)!

---------- × ----------

(n+2)! (n-2)!

(n+3).(n+2)! (n-1).(n-2)!

--------------- × --------------------

(n+2)! (n-2)!

(n+3) × (n-1)

n² +2n -3