john: how to solve equation using the quadratic formula
take a look at this video and see if it helps
http://www.youtube.com/watch?v=H5AM1bzqCQw
Here is a work page if you want
http://www.mathsisfun.com/algebra/quadratic-equation.html
also, if you have problems remembering it this might help. (unfortunately the visuals don't seem to be working any more but the sound is still worth while.)
http://www.youtube.com/watch?v=O8ezDEk3qCg
+118723 
