Question

fatorial, simplificação.

(A) (n+3)
--------
(n+1)



(B) (n-1)
------
n!



(C) 6!
----
4!​

Answer 1

 n! = (n -1).(n -2).(n -3). ... .3.2.1

• n ∈ N

a -

(n +3)! / (n +1)!

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

(n +3).(n +2)

n² +5.n +6

b -

(n -1)! / n!

(n -1)! / n,( n-1)!

1 /n

c -

6! /4!

6.5.4! /4!

6.5

30

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