1. Lesson 4.4 Solving ax 2 +bx+c=0 by factoring

2. Objective Factor to solve equations of the form ax 2 +bx+c=0

3. Standard 8.0 – Students solve and graph quadratic equations by factoring, completing the square, or using the quadratic formula. Students apply these techniques in solving word problems. They also solve quadratic equations in the complex number system. 10.0 – Students graph quadratic functions and determine the maxima

4. Academic Language monomial

5. Example

6. Process

7. Use the opposite of distribution method Multiply a and c Find factors of ac that add to b Rewrite equation using factors of ac in place of b Find greatest common factors Rewrite as multiplication of binomials

8. Back to the example

9. Practice

10. Special Case What do you notice?

11. Example

12. Greatest Common Factor First

13. Homework Punchline 13.7