1. Chapter 6, Section 5
Quadratic Formula

2. Discriminant
The discriminant is used to tell what kind of solutions a quadratic function has.
Properties
If the discriminant is >0 & is a perfect square , there are 2 real rational solutions
If the discriminant is >0 & is not a perfect square, there are 2 real irrational solutions
If the discriminant =0, there is 1 real rational solution
If the discriminant <0, there are2 complex solutions (conjugates)

3. Examples - Worksheet

4. What is the quadratic formula?
Video
Graphic Organizer

5. Examples

6. Homework 6-5 in practice workbook Exit Slip:
Problems 1-15 odd, 18, 27, 28
Exit Slip:
What advantage does using the quadratic formula have over finding a solution by graphing?