Review Solving Quadratic Equations

Solve using square roots. x² - 4 = 0

• x = 2

• x = 2 or -2

• x = -2

• x = 16 or -16

Solve the equation by factoring:

x² + x - 20 = 0

• x = -5 and 4

• x = 4 and 5

• x = 5 and -4

• x = -4 and -5

Solve using the quadratic formula.

12x + 9x² = 5

• x = -6/18 and 30/18

• x = -5/3 and 1/3

• x = 5/3 and -1/3

• x = 6/18 and -30/18

Solve using square roots. 3x² - 15 = 0

• x = -√5

• x = 5 and -5

• x = √5

• x = √5 and -√5

Solve the equation by factoring:

x² -5x = 24

• x = ±√5

• x = -8 and 3

• x = 8 and -3

• No Real Solution

Solve using the quadratic formula.

x² + 10x = -25

• x = -5

• x = ±5

• x = 5

• x = 0

Solve using quadratic formula or by factoring. 2x² + 7x = 15

• -1.5 or 5

• No Solution

• -5 or 1.5

• 0.7 or 5

Solve. 4x² = 64

• x = 16, x = -16

• x = 4, x = -4

• x = 8, x = -8

• x = 32, x = -32

Solve. 3x² - 27x = 0

• x = 3, x = -3

• x = 0, x = 9

• x = -27

• x = 0, x = 3

Solve. x² - 81 = 0

• x = 3, x = -3

• x = 0

• x = 9, x = -9

• x = 81