1. Factor a difference of squares.
8.5 Factoring a Difference of Squares Objective The student will be able to:
Factor a difference of squares.

2. Factoring Chart This chart will help you to determine which method of factoring to use. Type Number of Terms
1. GCF or more
2. Grouping 4
Quadratic 3
Trinomials

3. Ex 1) Factor completely: x2 – 16

4. Ex 2) Factor completely: 4x2 – 9

5. Difference of Squares:

6. Ex 3) Factor completely: 25x2 – 64

7. Ex 4) Factor completely: 81x2 – 49y2

8. Ex 5) Factor completely: x4 – 9y2

9. 8.5 HW pg. 502 #15 – 35 Odds, (11 problems)