1. GOAL: FACTOR TRINOMIALS OF THE FORM AX 2 + BX + C Section 5-4: Factoring ax 2 + bx + c

2. Warm - Ups (x + 10)(x – 8) (2x – 5)(3x – 4) (4y + 1)(4y + 1) The sides of a rectangle are (s + 2) and (s – 4). Find the area.

3. Example 1: Factor ax 2 + bx + c when c is positive. Factor: 3x 2 + 7x + 2

4. 2x 2 + 11x + 5 2y 2 + 9y + 7 Checkpoint: Factor the expression.

5. 3r 2 + 8r + 5 3x 2 - 10x + 8 Checkpoint: Factor the expression.

6. Example 2: Factor ax 2 + bx + c when c is negative. 4x 2 - 16x - 9

7. 6x 2 + x - 15 6z 2 + z - 12 Checkpoint: Factor the expression.

8. Example 3: Factor out a common constant. 6x 2 + 27x - 15

9. 8x 2 + 28x - 120 4w 2 – 6w + 2 Checkpoint: Factor the expression.

10. Example 4: Find the Zeros of a Quadratic Function y = 3x 2 - x - 4

11. y = 3x 2 - 2x - 1 y = 2x 2 - 7x + 3 Checkpoint: Find the zeros of the function.

12. Minimum and Maximum Values

13. y = (x + 2)(x + 4) y = (x + 4) (x – 8) Find the minimum or maximum value of the function.

14. HOMEWORK: