1. On this happy face, what quadratic function graphs a smile that
crosses the x-axis twice?
touches the x-axis once?
misses the x-axis completely?

2. I can use the quadratic formula to solve quadratic equations.
Today’s Objective:
I can use the quadratic formula to solve quadratic equations.

3. Review solving methods:
Solve by completing the square:
Solve by factoring:

4. Quadratic Equation must equal 0!
Quadratic Formula
Quadratic Equation must equal 0!

5. Using the Quadratic Formula:

6. Using the Quadratic Formula:

7. p. 245: – 51 odds,