1. Warm Up

2. Solving Quadratic Equations by the Quadratic Formula

3. Refresh

4. Practice

5. You try

6. Try again: put in general form

7. What does it mean to “solve”? When you are asked to “solve” a quadratic, it is asking you to find the roots.

8. THE QUADRATIC FORMULA

9. What do we do with it?

10. Example

11. Example 1 continued

12. WHY USE THE QUADRATIC FORMULA? The quadratic formula allows you to solve ANY quadratic equation, even if you cannot factor it.

13. Example 2

14. Example 3: You try Answer: 6, -14

15. Example 4: you try again! Answer: -3, 8

16. You try! Start with 1 and 4, then go on to the others.

17. Homework: 9.7 1: all 3: a and b.