Solving Quadratics

Factoring

100

x² - 1 = 0

x = 1, x = -1

200

 x²+3x+2 = 0

x = -2, x = -1

300

x² - 6x + 5 = 0

x = 5, x = 1

400

x² - 3x = 0

x = 0, x = 3

500

5x² + 20x + 15= 0

x = -1 and x = -3

More Factoring

100

2x² - x = 0

x=0; x=frac{1}{2}

 

200

9x² - 81 = 0

x = -3, x = 3

300

2x² +11x+14 = 0

x=-frac{7}{2}; x=-2

400

5x² - 39x+20 = -8

x=frac{4}{5}; x=7 

500

6x^2-4x-10=0

x=frac{5}{3}; x=-1

Quadratic Formula

100

What is the quadratic formula?

x = -b +- sqrt(b² - 4ac) /(2a)

200

Solve the following quadratic equation by using the quadratic formula: x² + 6x + 5 = 0

x = -1, x = -5

300

x² - 9x + 6 = 0

x=frac{9+-sqrt{57}}{2}

400

2x² + 9x + 4 = 0

x = -1/2 x = -4

500

4x² - 17x =-12 

x = 3.4, x = .9

Solving with Square Roots

100

When you square root a positive number, how many solutions should you get? 

2 solutions

200

x^2=81

=+-9

300

x^2+7=11

=+-2

400

4x^2-7=-3

+-1

500

64x^2-4=21

+-0.625

Random

100

I live in a Pineapple under the sea

Who is Spongebob SquarePants?

200

The longest river in the United States

What is The Mississippi River?

300

Sing the Quadratic Formula song!

Sing Quadratic Formula to the Macarena

400

How many properties are there on a standard Monopoly board?

28

500

Loudest animal on Earth

The sperm whale is considered the loudest animal on Earth, capable of producing sounds up to 230 decibels. This is louder than a jet engine, which is about 150 decibels