Question

X! (X+2)!/ (x+1)! (X-1)!

Answer 1

X! (X+2)!/ (x+1)! (X-1)!

x.(x-1)!(x+2)!/(x+1).(x+2)!((x-1)!


=x/(x+1)

espero ter ajudado!

boa noite!