Question

Resolva a seguinte equação ( fatorial )

8.(x+3) ! = 2
(x+4) !

Answer 1

                    $\frac{8.(x+3)!}{(x+4)!} =2 \\ \\ \frac{8.(x+3)!}{(x+4)(x+3)!} =2 \\ \\ \frac{8}{x+4} =2 \\ \\ 8=2.(x+4) \\ \\ 8=2x+8 \\ \\ 2x=8-8 \\ \\ 2x=0$

                                     $x=0$