(n + 1)!/n!

(n + 2)!/n!

((n + 1)! + n! - (n - 1)!)/(n - 1)!

Naturally I don't want answers for them all, however, I do know that the first one equals n + 1, and the second one equals (n + 2)(n + 1), but I don't see how to get to that answer.

If anyone can do out the simplification process simply for me, that would be greatly appreciated, thanks!