1. L5-7 Objective: Students will be able to solve quadratics by using the quadratic formula.

3. Practice
1. x² - 4x + 3 = 0
2. 2x² + 5x – 7 = 0
3. x² + 10x = -25

6. L5-8 Objective: Students will solve equations by completing the square

7. Find the missing value to complete the square: x2 + 20x + .
Completing the Square
Solve x2 – 12x + 36 = 9.
Find the missing value to complete the square: x2 + 20x

8. Completing the Square
Solve x2 + 4x + 1 = 0.
Solve x2 + 6x + 12 = 0.

9. Write y = x2 + 5x + 2 in vertex form.
Completing the Square
Solve 2x2 = – 7x + 1.
Write y = x2 + 5x + 2 in vertex form.

10. Practice
Solve by completing the square

12. Review
Graph y = 2x² - 4x

13. Graph y = (x-3)² + 5

14. Graph y = ( x + 2)² - 3

15. Solve
x² + 10x + 24 = 0
Factor
4x² + 12x x² - 6x – 16
Simplify
1. (3 – i)(2 + 3i) 2. (2 + i) + ( 3 – 2i)

16. Homework
L5.7 (P 289) #18-24e 28-32e 52-56e
L5.8 (P 297) #12-34e