Question

Could somone give me and example of hwo to do each? :) thanks! Factoring by Grouping (four-term polynomials and trinomials)

Answer 1

You may want to check out Paul's Online Math Notes (bookmark it) he gives LOTS of examples.

http://tutorial.math.lamar.edu/Classes/Alg/Factoring.aspx

Also http://www.mathtv.com has lots of very good videos: click algebra, then factoring, and you'll see them.

Answer 2

There are more examples here
http://www.purplemath.com/modules/simpfact3.htm :)
Hope these are helpful. If there are any specific problems you have a question about feel free to ask.