Today’s Objectives :

# Today’s Objectives :

Télécharger la présentation

## Today’s Objectives :

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
##### Presentation Transcript

1. Pre-Calculus 1 Today’s Agenda Today’s Objectives: • Portfolio Due • HW #13 Due • Do Now • SWBAT… • Explain relationship between completing the square of a standard form quadratic equation and the quadratic formula • Name the quadratic formula • Apply the quadratic formula to solve quadratic equations • Group Share 3. Notes: Quadratic Formula 4. Work in Pairs 5. Ticket-to-Go! Due Today: • HW #13 Citizenship Reflection • Portfolio Skill 1 Homework #14: • Handout – Quadratic Formula

2. Why might we need another way to solve quadratic equations?How could you solve a quadratic equation that had fractions and decimals? Group share

3. Derivingthe Quadratic formula

4. Subtract constant term from both sides • 2. Rewrite equation

5. 3. Divide both sides by a • 4. Simplify What will make this a perfect square trinomial?

6. 5. Find the constant term of perfect square trinomial Add this to both sides

7. Add • to both sides • 7. Simplify the right-hand-side; find a common denominator • 8. Rewrite left side as perfect square and simplify further

8. 9. Take square root of both sides

9. 10. Simplify right-hand-side

10. 11. Subtract • from both sides

11. 12. Simplify right-hand-side

12. Remember, this breaks out to give two different answers