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Quadratic Equations

Quadratic Equations. Quadratic Formula. Quadratic Formula. The Quadratic Formula can be used for any quadratic equation. You do not have to memorize it, just always know where to find it. Be careful with the numbers and make sure you put them in the right place. a x 2 + bx + c = 0.

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Quadratic Equations

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  1. Quadratic Equations Quadratic Formula

  2. Quadratic Formula • The Quadratic Formula can be used for any quadratic equation. • You do not have to memorize it, just always know where to find it. • Be careful with the numbers and make sure you put them in the right place. • ax2 + bx + c = 0

  3. Quadratic Formula a = 1 b = 3 c = 2 Plug in the numbers. Take care of the numbers under the radical. Then solve. • Let’s start with an easy one. • x2 + 3x + 2 = 0 • x = -1 and x = -2

  4. Quadratic Formula a = 1 b = -5 c = 2 Plug in the numbers. Take care of the numbers under the radical. Then solve. • Try another one. • x2 - 5x + 2 = 0 • x = and x =

  5. Quadratic Formula a = 2 b = -4 c = -3 Plug in the numbers. Take care of the numbers under the radical. Then solve. • And again….. • 2x2-4x - 3 = 0 • x =

  6. Quadratic Formula a = 6 b = 2 c = 4 Plug in the numbers. Take care of the numbers under the radical. Then solve. • And again…. • 6x2 + 2x + 4 = 0 • x =

  7. Quadratic Formula • Work these out in your notes! • 1. x2 + 3x – 4 = 0 • 2. 2x2 – 7x – 8 = 0 • 3. -2x2 + 3x – 4 = 0 • 4. x2 – 5x + 5 = 0 • 5. 5x2 – 15x – 17 = 0

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