1. Section 5-5: Factoring Using Special Patterns Goal: Factor Using Special Patterns

2. Difference of Two Squares Pattern

3. Example 1: Factor a Difference of Two Squares m 2 – 25 9y 2 - 16 p 2 - 625 x 2 - 36

4. Example 1: Factor a Difference of Two Squares r 2 – 100 ¼ p 2 - 81 9m 2 - 64 16x 2 - 25

5. Perfect Square Trinomials

6. Example 2: Factor a Perfect Square Trinomial m 2 + 16m + 64 9p 2 + 30p + 25

7. Example 3: Factor Out a Common Constant 5u 2 – 40u + 80 4m 2 – 24m + 36

8. Checkpoint: Factor the Expression x 2 + 10x + 25 9p 2 – 24p + 16 4x 2 + 12x + 9 5x 2 – 10x + 5

9. Checkpoint: Factor the Expression 8y 2 - 18 12u 2 – 36u + 27

10. Example 4: Solve a Quadratic Equation 9p 2 + 30p = -25 x 2 – 6x = -9

11. Example 4: Solve a Quadratic Equation a 2 - 4 = 12 2y 2 = 40y - 200

13. P. 252 – 253 # 20 – 64 EVEN HOMEWORK: