What method of factoring should first be used?

4, b, to the power 9 , c, to the power 6 , minus, 49
4b
9
c
6
−49
Answer
Greatest Common Factor
Greatest Common Factor
Difference of Perfect Squares
Difference of Perfect Squares
Trinomial Factoring
Trinomial Factoring
Does Not Factor
Does Not Factor

The first method of factoring that should be used is the Greatest Common Factor (GCF).