Quadratic Formula and Factoring

Solve this quadratic equation by factoring

• -2, 4

• -8

• ±8

• No real solution

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

Solve by factoring.
z² - 6z - 27 = 0

• z = 3 or z = 9

• z = 3 or z = -9

• z = -3 or z = 9

• z = -3 or z = -9

Solve by factoring OR using the quadratic formula:

5x² - 5x - 8 = 3x² + 4

• x = -4 and x = -6

• x = 4 and x = -3/2

• x = 4 and x = 6

• x = -4 and x = 3/2

Solve by factoring: x² + 3x - 18 = 0
Put the solutions in order from least to greatest.

{​ (a)   ,​ (b)   }

• -6

• 3

• 6

• -3

• 9

• -2

• -9

• 2

• 18

• -1

Solve by factoring: x² - 5x + 6 = 0
Put the solutions in order from least to greatest.

• -6

• 3

• 6

• -3

• 9

• -2

• -9

• 2

• 18

• -1

Solve by factoring: x² - 5x + 6 = 0
Put the solutions in order from least to greatest.

• -6

• 3

• 6

• -3

• 9

• -2

• -9

• 2

• 18

• -1

Solve:  x² - 3x - 28 = 0

• -4, 7

• 4, 7

• 4, -7

• -4, -7

Solve the following quadratic equation...

x² - 14x + 24 = 0

• x = 12

  x = 2

• x = 4

  x = 6

• x = 3

  x = 8

• x = 1

  x = 24