Khan Academy on a Stick
Recognizing a perfect square quadratic
U09_L2_T2_we2 Solving Quadratic Equations by Factoring 2.avi
If the above player doesn't work, try this direct link.
U09_L2_T2_we2 Solving Quadratic Equations by Factoring 2.avi
If the above player doesn't work, try this direct link.