1. Section 4.7 – Quadratic Formula
Objective: Solve quadratics by the quadratic formula
EQ: What’s the solution to any quadratic equation?

2. Essential Understandings
Quadratic Formula (the general solution) If
then

3. Ex. 1 – Solve by quadratic formula

4. Ex. 2 – Solve by quadratic formula

5. Essential Understandings
Discriminant (pg 243)
If it is positive 2 real zeros
If it is equal to zero 1 real zero
If it is negative 0 real zeros (2 complex)

7. Ex. 3 – What is the number of real solutions of

8. HMW
pp. 244 – , 25, 38, 41, 78, 79, 82, 88, 67, 76