1. Warm ups What is the quadratic formula?
Solve using the quadratic formula

2. Homework Questions?

3. 9-6 Quadratic Formula
Objective: To use the quadratic formula to solve a quadratic equation.
Standard 19.0

4. x = -b ± √ (b2 - 4ac ) 2a Story Reminder…. A negative Boy
YOU MUST MEMORIZE THIS!!!
Story Reminder…. -b √
(b2
- 4ac )
x = 2a
A negative Boy
couldn’t decide
whether or not to go to a radical party.
The Boy was square
so he couldn’t get four Awesome Chicks.
It was all over
at 2 am.

5. Song Practice  Practice 5x together…

6. Multiply through by 4 to get rid of the fractions!
Example 1
Multiply through by 4 to get rid of the fractions!
a = 8
b = -5
c = -2

7. Problem 2

8. Problem 3

9. Homework
Pg. 586 # 7 – 21 odd, 44
Quiz tomorrow!