Solving Quadratic Equations by Using the Quadratic Formula

Solve the following quadratic equation (round your answer to 2 decimal places)....

x² - 2x - 6 = 0

• x = 3.65

  x = -1.65

• x = 4.65

  x = -1.65

• x = 3.65

  x = -0.65

• x = 4.65

  x = -0.65

Solve the following quadratic equation (round your answer to 2 decimal places)....

x² - 9x + 2 = 0

• x = 8.77

  x = 0.23

• x = 8.77

  x = -0.23

• x = -8.77

  x = 0.23

• x = -8.77

  x = -0.23

Identify the values of a, b and c in the following quadratic equation 2x² + 3x + 1 = 0

• a=2, b=3, c=1

• a=3, b=1, c=0

• a=1, b=2, c=3

Identify the values of a, b and c in the following quadratic equation x² + 3x - 3 = 0

• a=1, b=3, c=-3

• a=3, b=-3, c=0

• a=1, b=3, c=3

Identify the values of a, b and c in the following quadratic equation x² - 2x - 8 = 0

• a=1, b=-2, c=-8

• a=-2, b=-8, c=0

• a=1, b=2, c=8

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

What is this formula?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.