First, you solve this equation with the theory of relativity, next you use e=mc2 to solve the speed of the equation, next you use the quadratic formula to get the answer for x in the equation, then you have to draw a line for the equation and find the slope and attempt to divide by 0. If you get past that, you should get infinity, if you don't, you screwed up the equation at the beginning meaning that you will have to start all over again.