Question

Simplifique a fração (n-2)!/(n-3)!

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)

R.: (n + 3)(n - 1)