Posted by kristina on Tuesday, February 26, 2008 at 4:23pm.
To Factor:
1) Find the Greatest Common Factor
2) Solve the trinomial (if their is one)
3) Find the difference of perfect square (if their is one)
So: the factors of 18,9, and 7
18c: 1c,2c,3c,6c,9c,18c
9c: 1c,3c,9c
7c: 1c,7c
So the GCF is C
yes