1. Warm UP Take a few minutes and write 5 things you remember about the quadratic formula?? Take a few minutes and write 5 things you remember about the quadratic formula?? Be ready to share with your neighbor.

2. The Quadratic Formula 4-7

3. Vocabulary Quadratic Formula: Quadratic Formula: the roots (solutions) are exactly the x-intercepts of the quadratic function, that is the intersection between the graph of the quadratic function with the x-axis.

4. Discriminant The discriminant of a quadratic equation in the form of is the value of the expression

5. Discriminant Positive Zero Negative 2 real solutions /roots/ x-intercepts 1 real solution /root/ x-intercept 0 real solutions /roots/ x-intercepts

7. 1) Find the Discriminant. Determine the number of real solutions. The discriminant is positive. The equations has two real solutions.

8. 2) T.O.O. - Find the Discriminant. Determine the number of real solutions. -4, No Real Solutions -23, No real solutions

9. 3) What are the solutions? Use the Quadratic formula.

10. 4) What are the solutions? Use the Quadratic formula. or

11. 5) T.O.O. - What are the solutions? Use the Quadratic formula.

12. Homework WORKSHEET 4-7