
Wendy S. answered 02/11/13
A certified teacher with over 30 years' teaching experience
First thing that I can see is that you can factor out a 2xz since there is an x and a z in each term, and 2 is a factor of each coefficient. Did you type that in correctly? If so, that is all that can be pulled out, and the y in the first term means that you can't factor farther.
Wendy