1. Warm-up
Handout!

2. Warm-up

3. Homework Answers

4. 4.A Quiz
For the quiz….
You may use your notes
You have 12 minutes!!

5. After this lesson you will be able to…
4.d Solve Quadratics [4.5, 4.6, 4.7]
After this lesson you will be able to…
find the roots of a quadratic equation by factoring

6. 4 Ways to Solve a Quadratic Equation
Graphing
Factoring
Completing the Square
Using the Quadratic Formula

7. Review of Factoring MAGIC Multiple
Add/subtract to get your middle terms
Group terms
If inside parenthesis work, bring them to the front and group the other two in parenthesis
Check you work

8. Procedure Factor like normal
Set the first set of parenthesis equal to 0
Set the second set of parenthesis equal to 0
Solve both equations

9. Example 1 - Starting Simple (me)
(x+3)(x-7)=0

10. Example 2 (you)
(3x – 9)(x + 2)=0

11. Example 3 (me)
FACTOR
x2 – x = 12

12. Example 4 (you)
FACTOR
x2 – 12x + 36 = 0

13. Example 5 (you)
FACTOR
9x = -24x

14. Example 6 (you)
FACTOR
3x2 = 5c

15. Example 7 (you)
x2 – 36 = 0

16. Word Problems
A parabola has intercepts x=-8, x=4 and y = What is the equation of the parabola?

17. Word Problems
A parabola has intercepts x=2, x=-2 and y = What is the equation of the parabola?

18. Homework: ST 4.d (Factoring) both sides Quiz Tomorrow!
Chapter 4 Test will be Thursday 3/21!