Question

simplifique

A- (n-2)! / (n-4)!

Answer 1

Resposta:

(n-2)!

(n-4)!=2

(n-2) (n-3) (n-4)!

(n-4)! =2

(n-2)(n-3)=2

n°² -5n+4=0

n={1,4}

N=4