Originally Posted by

**Prove It** Your solution has MAJOR flaws, in that you have only shown the equation is true when x = 1 and x = 3, not for all x.

Also, you can NOT start by writing the equation and working on both sides as if it was true. You are trying to show it is true, which means you can't make the assumption at the beginning (unless you were using a proof by contradiction, in which case you need to assume the OPPOSITE is true).

You have to start with one side and manipulate it until you get to the other side.