Square root method/ factoring quiz review

x² = 16

• ± 4
• ± 8
• 4
• 8

3x² = 12

• ± 2
• 2
• ± √12
• ± 4

(x + 1) ² = 25

• ± 5
• 4  or  -6
• -4  or  6
• ± 4

(x - 2) ² = 9

• ± 3
• 5  or  -1
• -5  or  1
• ± 9

3x² - 1 = 14

• 5
• -√5
• -√5, √5
• √5

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

7x² - 26x - 8 = 0

• x = -1 and x = -7/8
• x = 4 and x = -2/7
• x = -4 and x = 2/7
• x = 4 and x = -7/2

Solve
(x+3)²-5 = 9

• -3±√14
• 3±√14
• ±11
• ±5

Solve  by factoring
x² + 13x + 12 = 0

• x = -12, -1
• x = 12, 1
• x = 13, 1
• x = -13, -1

Factor
3a² + 4a + 1

• (7a-10)(a-8)
• Not factorable
• (3a+1)(a+1)
• (3a-1)(a-1)