Question 987008
Can you decompose the polynomial into something of a form  (x+r)(x+s) ?  If not, then this method of the lesson will always work:
<a href="http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev">http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev</a>