Solving Quadratic Equations

What mathematical process did they use?

• Quadratic Formula
• Completing the Square
• Factoring
• Differentiation

What is this formula?

• Pythagorean Formula
• Quadratic Formula
• Distance Formula
• Correlation Formula

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

Solve this quadratic.

• b=4/5, b=3
• b=4, b=-3
• b=1/5, b=3
• b=4/5, b=-3

• -2, 4
• -8
• ±8
• No real solution

Solve for x.

6x² - 9 = 87

• x = 4, -4

• x = 4

• x = 16

• x = 16, -16

Solve: 2x² - 5x - 12 = 0

• x = -4 and x = -6
• x = 4 and x = -3/2
• x = 4 and x = 6
• x = -4 and x = 3/2

Solve: x² + 3x - 18 = 0

• x = -3 and x = 6
• x = 3 and x = -6
• x = -9 and x = 2
• x = 9 and x = -2

What is the first step in solving 
(x + 2)(x - 3) = 0      ?

• Plug in zero for x
• Solve for x
• FOIL
• Set each binomial factor equal to zero

Solve for X:

(x - 5)(x + 6) = 0

• {5, 5 }

• { -5, -5 }

• { -5, -6 }

• {5, -6 }