There are all sorts of ways to do this (just plug the trial solutions into the equation until you have found two correct solutions), but I can't think of any way that doesn't require up to seven attempts to find the first solution and a little more work to find the second one.Originally Posted byBoysey

If you have a graphing calculator and are allowed to use it, graph the equation and look up the zeroes. This may be a good idea anyway when you have solved the problem with some other method.

Your best bet is to look up the solution formula in your math book and compute the solutions from scratch, then you can find them in the list.