Question

Resolva os fatoriais.

A- 4!+5!/4!
B- 9!+8!/7!
C- (×+1)!/(×-1)!

Answer 1

Vamos la

A (4! + 5!)/4! = 4!/4! + 5*4!/4! = 1 + 5 = 6

B (9! + 8!)/7! = 9*8*7!/7! + 8*7!/7! = 72 + 8 = 80

C (x + 1)!/(x - 1)! = (x + 1)*x*(x - 1)!/(x - 1)! = x^2 ° x