Factoring
Use the Zero Product Property to solve the following quadratic equation. (x + 11)(x -8) = 0
x = -11 and x = 8
What is the quadratic formula?
x = -b +- sqrt(b2 - 4ac) / 2a
What are two ways to solve a Quadratic Equation?
Solve by Factoring or Solve by using the Quadratic Formula
Solve the following quadratic equation by factoring.
x2 - 11x + 18 = 0
x = 9 and x = 2
Solve the following quadratic equation by using the quadratic formula:
3x2 + 8x + 5 = 0
x = -1.67 and x =-1
When solving for the timing of a max/min height, what formula do we use?
-b/2a
Solve the following quadratic equation by factoring.
x2 + 10x + 24 = 0
x = -6 and x = -4
Solve the following quadratic equation by using the quadratic formula:
2x2 - 9x + 7 = 0
x = -1 and x =3.5
Solve the following quadratic equation by factoring.
x2 - 17x - 38 = 0
x = 19 and x = -2
Solve the following quadratic equation by using the quadratic formula:
4x2 + 10x - 5 = 0
x = -2.93 and x = 0.43
When solving for the timing of an object hitting the ground, what formula do we use?
Quadratic Formula
Solve the following quadratic equation by factoring.
x2 + 17x + 52 = 0
x = -4 and x = -13
Solve the following quadratic equation by using the quadratic formula:
x2 - 14x - 15 = 0
x = -1 and x = 15
Throwing a ball into the air is based on the function:
-5x2 +6x + 9 = 0. How high will it go?
Height = 10.8 feet