4. Wed 11/4 Lesson 4 – 7 Learning Objective: To solve using quadratic equations Hw: Lesson 4 – 7 WS

5. Algebra II

6.  To solve quadratic equations by using quadratic formula  To find discriminant  To understand what discriminant describes

9. = 1 + 120 2 Real Roots

10. = 400 – 400 1 Real Double Root

11. = 16 – 52 2 Imaginary Roots

12. Set = 0 a = 9 b = 7 c = –1

13. Distribute & Set = 0 a = 1 b = 2 c = –168 x = 12, –14

15. Discriminant = 0 1 Real Double Root x = 3 and x = 3 (counts twice!)