There are several resources on the internet that can help you out. You can begin by watching this video on youtube: http://www.youtube.com/watch?feature=player_embedded&v=Kz7lUvl43hM You can read a tutorial here: http://www.mathwarehouse.com/algebra/factor/how-to-factor-trinomials-step-by-step...
Answers by Miles A.
How do we factor trinomials? (answer)
What does n! mean (answer)
The ! in n! means n-factorial. A factorial is the product of all positive integers less than n. To read more about factorials, visit this page on wikipedia: http://en.wikipedia.org/wiki/Factorial