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Warm-Up: p. 295 #4-14 even: Factor

Warm-Up: p. 295 #4-14 even: Factor. Homework Questions?. PSAT Questions?. Solving Quadratic Equations. Lesson 5.3, Part 2. Essential Question. How can we use factoring in order to solve quadratic equations?. Solving Quadratic Equations. There must be an = to be an equation

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Warm-Up: p. 295 #4-14 even: Factor

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  1. Warm-Up: p. 295 #4-14 even: Factor

  2. Homework Questions?

  3. PSAT Questions?

  4. Solving Quadratic Equations Lesson 5.3, Part 2

  5. Essential Question • How can we use factoring in order to solve quadratic equations?

  6. Solving Quadratic Equations • There must be an = to be an equation • Move everything to one side so that one side = 0 • Use the zero product property • If pq = 0, then p = 0 or q = 0 • Set each factor equal to zero • Solve each equation to find up to two solutions.

  7. Example 1 – Solve for x

  8. Example 2 – Solve for x

  9. You-Trys

  10. Warm-Up: October 16, 2012 Solve for x by factoring and zero product property

  11. Quiz Thursday • Quiz on Factoring • 10 questions, all free response • 15 minute time limit • Will be included in your progress report grade

  12. Homework Questions?

  13. PSAT Questions?

  14. Finding Zeros of Quadratic Functions • Given f(x) = ax2 + bx + c • The zeros are where f(x) = 0 • Where the parabola crosses the x-axis Zeros

  15. They all mean the same… • Roots • Zeros • x-intercepts • They all mean set f(x)=0 and solve for x

  16. Example 3 • Find the zeros of g(x) = 6x2 + 20x – 16

  17. You-Try #4 • Find the zeros of f(n) = n2 – n – 30

  18. Assignment • Page 296-297 #69-87 odd, 101 • Check answers in back of book after you complete the problems. Fix any incorrect problems.

  19. October 17, 2012 • Factor the following:

  20. Warm-Up: October 18, 2012 • Factor the following:

  21. Earthquake Drill Today at 10:18 • Duck and Cover when you hear the bell • After 30-60 seconds another bell will ring. This is the signal to evacuate. • Take all your possessions with you. You will go directly to 4th period after the drill. • You will follow Mr. Szwast to the utility field. • You must stay with the class on the field in single file line.

  22. Questions About Factoring?

  23. Quiz Time • Clear everything off of your desk except a pencil and eraser. • 15 minute time limit • Any talking while any quiz is out will result in a zero. • When finished, turn in your quiz on the front table and silently get out your binder for notes.

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