Question 947729
Your book must have that discussion.  That should be the first place to find and study how.  You can also study these hyperlinked lessons:


<a href="http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev">Includes how to convert, using Completing The Square</a>
http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev


<a href="http://www.algebra.com/my/Completing-the-Square-Using-Pictures.lesson?content_action=show_dev">Explains what Completing The Square means</a>
http://www.algebra.com/my/Completing-the-Square-Using-Pictures.lesson?content_action=show_dev