Question 631948
<pre>
Watch these Youtubes:

http://www.youtube.com/watch?v=9wDb-1yTpoo

http://www.youtube.com/watch?v=lZezCGUaOEI

http://www.youtube.com/watch?v=mquu-I7p2JE&feature=fvwrel

http://www.youtube.com/watch?v=X4sRy7_usYI&feature=related

And there are links for others there for most any topic in algebra.

Edwin</pre>