2. Solve. Give all possible solutions!!! Solve and give all possible solutions.

3. Let’s Recap

5. CCGPS Geometry UNIT QUESTION: How are real life scenarios represented by quadratic functions? Today’s Question: When does a quadratic have an imaginary solution? Standard: MCC9-12..A.REI.4b

6. Solving Quadratic Equations by Taking Square Roots

7. Solving with Square Roots 1.Get x 2 or the squared term by itself 2.Take the square root of BOTH sides of the equals sign 3.Don’t forget the  sign 4.Simplify and solve for x!

8. Solve by Taking Square Roots

18. Falling Objects! Use h = -16t 2 + h 0 Height of the object after it has fallen # of seconds after the object is dropped Object’s initial height

19. Example The tallest building in the USA is in Chicago, Illinois. It is 1450 ft. tall. How long would it take a penny to drop from the top of the building to the ground?

20. Application Problem #2 For a period of 48 months, the average monthly operating costs for a small business C (in dollars) is approximated by the model C=0.55t 2 +550 where t is the number of months. During which month was the average operating cost $1430?

21. Homework Practice Sheet

22. Ticket Out the Door! Solve! Give a complete solution.