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.

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Presentation transcript:

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.

The Quadratic Formula 4-7

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.

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

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

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

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

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

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

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

Homework WORKSHEET 4-7