Question

Simplifique a fração:

(n-3)! / (n-1)!

Answer 1

(n-3)! / (n-1)!

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

1 / (n-1).(n-2)

1 / n²-2n-n+2

1 / (n²-3n+2)