Solving by Square Roots

Chapter 3.1 Solving quadratics

Multiple Choice

3x² - 1 = 14

• 5
• -√5
• -√5, √5
• √5

Multiple Choice

• A
• B
• C
• D

Multiple Choice

k² - 6 = 43

• k = √37

• k = 37 or - 37

• k = 7, k = -7

• no solution

Multiple Choice

4m² - 100 = 0

• m=25, -25

• m=96

• m=5, -5

• m=-96

Multiple Choice

• ±72

• ±12

• 12

• No real solution

Multiple Choice

7x² + 1 = 8

• ± 1
• ± 7
• ± √7
• ± 8

Multiple Choice

x² + 4 = 68

• ± 8
• ± √8
• 8
• ± 64

Multiple Choice

3x² = 12

• ± 2
• 2
• ± √12
• ± 4

Multiple Choice

Write the question and show all work.
(x-5)² = 25

• ±0
• ±10
• 10, 0
• -10, 0

Multiple Choice

Write the question and show all work.4x²=100

• 25
• ±25
• 5
• ±5

Multiple Choice

Solve using square roots.

• ± 1/4
• ± 9/36
• ± 1/2
• No real solution

Multiple Choice

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solution

Multiple Choice

x² + 4 = 68

• ± 8
• ± √8
• 8
• ± 64

Multiple Choice

-5x² = -50

• ± 5
• ± 10
• ± √10
• -10

Multiple Choice

3x² = 12

• ± 2
• 2
• ± √12
• ± 4

Multiple Choice

x² = 16

• ± 4
• ± 8
• 4
• 8