Question

Simplifique
(n+2)!+(n+1)!
_________

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

Answer 1

(n+2)!+(n+1)!
(n+2)×(n+1)!+(n+1)!
(n+1)!×(n+2+1)
(n+1)!×(n+3)

(n+2)!-(n+1)!
(n+2)×(n+1)!-(n+1)!
(n+1)!×(n+2-1)
(n+1)!×(n+1)