3.1 Factoring Review

x² + 9x + 20 = 0

• x = 5, 4

• x = -4, -5

• x = 0, -4

• x = 5, -5

x² = 2x + 8

• x = 8, -1

• x = 3, 4

• x = -2, 4

• x = 4, -2

2x² - 12x - 14 = 0

• x = 2, 7

• x = -7, -1

• x = -7, 7

• x = 7, -1

3x² - 36 = -3x

• x = -4, 3

• x = 4, 3

• x = 6, -6

• x = -6, 2

3x² - 6x = 45

• x = -5, -3

• x = 5, -3

• x = -3, -9

• x = -5, 0

24x + 40 = -2x²

• x = 8, 5

• x = 10, 2

• x = -2, -10

• x = -8, -5

x² - 81 = 0

• x = 9, -9

• x = 81, 1

• x = 3, -27

• x = 0, 9

-75 = -3x²

• x = 5, -5

• x = 25, 1

• x = -25, -1

• x = 3, 25

2x² - 50 = 0

• x = 5, 25

• x = -5, 5

• x = 1, 5

• x = -25, -1

2x² = 72

• x = 72, 1

• x = 36, 6

• x = -6, 6

• x = 36, -1