1. Section 4.3
Solve

2. California Standard:
21.0: Students graph quadratic functions and know that their roots are the x-intercepts

3. OBJECTIVE(S): By following instructions, students will be able to:
solve quadratic equations.

4. Example 1: Factor the expression. a) b)

5. U-TRY#1:
Factor the expression. If the expression cannot be factored, say so. c) b) 5

6. DIFFERENCE OF SQUARES
Examples:

7. Example 2: Factor the expression. a) b) c)

8. U-TRY#2:
Factor the expression. c)
b) d) 8

9. Example 3: What are the roots of the equation ?

10. Example 4: Find the zeros of the function. a) b)

11. U-TRY#3:
Find the zeros of the function. c) b) 11

12. HOMEWORK
Sec 4.3 WS