1. §5.4 Part 1 GCF Objectives: - Factor out the GCF of an expression

2. Definitions A prime number is a whole number greater than 1 whose only factors are 1 and itself. Greatest Common Factor (GCF) – A common factor of the terms of the expression. Factoring – Rewriting an expression as the product of its factors. (Reverse FOIL)

3. 1. Find the GCF of 4x 2 – 2x + 6

4. 2. Find the GCF of 3x 3 – 9x 2 + 6x

5. 3. Factor out the GCF of 5k 2 p 3 – 3kp 2 + k 3 p 5

6. 4. Factor out the GCF of 12x 3 y 3 – 6xy 3 + 2x 3 y 4

7. 5. Factor 3x 2 + 18x + 9

8. 6. Factor: 4k 4 + 18k 3 – 6k 2