Four Ways to Solve Quadratic Equations

Using the graph solve the equation
-x²-2x+3=-5.

• {-3,-1}

• {-2,0}

• {-4,2}

• {-1,4}

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

2d² = 8

• 4

• -2

• -4, 4

• -2, 2

Solve the following quadratic equation...

x² + 13x + 36= 0

• x = -2

  x = -18

• x = -9

  x = -4

• x = -3

  x = -12

• x = -6

  x = -6

What method is being used to solve the Quadratic?

• Quadratic Formula

• Factoring

• Completing the Rectangle

• Completing the Square

Match each of the following to the method that would work the best to solve for x:

• Quadratic Formula

• Square Root Method

• Factoring Method

Select the solutions to the equation

4x² + 11x + 7 = 0

• x = - 1.75

• x = 6

• x = - 1

• x = 1

The quadratic function y = -2x² + 4x + 6 is pictured. What are the solutions to the equation 7.5 = -2x² + 4x + 6?

• x = 0.5

• x = 1.5

• x = 1

• x = 8

• x = 6

A function has a discriminant of 25.
______________
How many solutions does it have?

• 0

• 1

• 2

• 5

Solve using the Quadratic Formula:

15x² + 22x = −8

• x = −2/3, 4/5

• x = 2/3, −4/5

• x = 2/3, 4/5

• x = −2/3, −4/5