Solving Quadratic Equations

Solving equations

100

Solve the following quadratic equations: x² -5x -14 = 0.

x = 7 x = -2

200

Solve the following quadratic equation: x²+3x+2 = 0

x = -2 x = -1

300

Solve the following quadratic equation: x² - 6x + 5 = 0

x = 5 x = 1

400

Solve the following quadratic equation: x² - 6x - 27 = 0

x = 9 x = -3

500

Solve the following quadratic equation: 2x² - 5x - 3 = 0

x = -1/2 x = 3

Solving equations

100

Solve the following quadratic equation by using square roots: x² = 4

x = 2 x = -2

200

Solve the following quadratic equation by using square roots: x² = 121

+11 or -11

300

Solve the following quadratic equation by using square roots: 4x² = 400

x = 10 x = -10

400

Solve the following quadratic equation by using square roots: x² -9 = -8

1 or -1

500

Solve the following quadratic equation by using square roots: 5x² + 3 = 128

x = 5 x = -5

Solving equations

100

Solve the following quadratic equation: x² + 6x = -8

x = -2 x = -4

200

Solve the following quadratic equation: x² - 6x = -5

x = 1 x = 5

300

Solve the following quadratic equation: x² - 2x - 24 = 0

x = -4 x = 6

400

Solve the following quadratic equation: x² + 10x +16 = 0

x = -2 x = -8

500

Solve the following quadratic equation: 2x² - 8x = 10

x = 5 x = -1

Solving equations

100

What is the formula we use to solve quadratic equations?

x = -b +- sqrt(b² - 4ac) /(2a)

200

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

x = -1 x = -5

300

Solve the following quadratic equation: x² - 9x + 20 = 0

x = 5 x = 4

400

Solve the following quadratic equation: 2x² + 9x + 4 = 0

x = -1/2 x = -4

500

Solve the following quadratic equation: 4x² - 17x - 15 = 0

x = 5 x = -3/4