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# 13-4 The Quadratic Formula

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1. 13-4The Quadratic Formula Standard 8.0

2. Quadratic Formula • There once a negative boy who was all mixed up so he went to this radical party. Because the boy was square, he lost out on 4 awesome chicks so he cried his way home when it was all over at 2 AM.

3. Quadratic Formula IF THEN

4. Proving the Quadratic Formula • Solve by completing the square

5. #1 Solve using the quadratic formula.

6. #2 Solve using the quadratic formula

7. Solve using the quadratic formula

8. #3 Solve using the quadratic formula

9. #4 Solve using the quadratic formula

10. #5 Solve using the quadratic formula

11. Discriminant In the quadratic formula, the expression underneath the radical that describes the nature of the roots. The Discriminant

12. Understanding the discriminant Discriminant # of real roots 2 real roots 1 real roots No real roots

13. #6 Using the discriminant

14. #7 Using the discriminant

15. Using the discriminant

16. #8 Using the discriminant

17. #9 Using the discriminant