Question

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

Answer 1

Resposta:

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

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

Após simplificar fica:

x (x+2) ou x2+2x.