Question

SIMPLIFIQUE AS SEGUINTES EXPRESSÕES ( SIMPLIFIQUE O MÁXIMO POSSIVEL)

A) (N-1)!
(N-2)!


B) (3!X7!)
9!

C) (N-2)! (N+2)!
(N+3)! (N-1)!​

Answer 1

A) (N-1)! (n-1).(n-2)!

----------- = ---------------- = n-1

(N-2)! (n-2)!

B) (3!X7!). 6. 7! 6. 1

------------- = -------- = ------- = ------

9! 9.8.7! 72. 12

C) (N-2)! (N+2)! (n-2)!. (n+2)!

--------------------- = ------------------------------- =

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

1. 1

------------- = ---------------

(n+3).(n-1). n²+2n-3