Question 952208
{{{x^2-14x}}}


Factor what you have:

{{{x(x-14)}}};
This is like having a rectangle with dimensions x and x-14.


The rest of what I would say is developed more completely in the lesson:
<a href="http://www.algebra.com/my/Completing-the-Square-Using-Pictures.lesson?content_action=show_dev">What is Completing The Square? With Visual Explanation </a>
http://www.algebra.com/my/Completing-the-Square-Using-Pictures.lesson?content_action=show_dev