Respuesta :

3! = 3 * 2 * 1 = 6
4! = 4 * 3 * 2 * 1 = 24
2! = 2 * 1 = 2

Now all you need to do is put all this together.

[tex] \frac{3! - 4!}{2!}=\\ \\ \frac{6 - 24}{2}= \frac{-18}{2} [/tex]= - 9