1. The problem statement, all variables and given/known data I have been workin on a mathematical induction question and have run into trouble with the simplification. 2. Relevant equations 3. The attempt at a solution I know that the solution i am trying to reach is (k+2)!-1 but i do not know where to go from the equation: (k+1)!-1 + (k+1)(k+1)! could someone plz help.