Homework Hints

Common factoring:

http://school.discovery.com/homeworkhelp/webmath/factorgcf.html

Difference of Squares:
http://school.discovery.com/homeworkhelp/webmath/factrdiffsq.html

Trinomials:
http://school.discovery.com/homeworkhelp/webmath/factortri.html

This excellent site give extra practice in factoring:
http://www.saab.org/mathdrills/factor.cgi