Square Method Quadratics

x² = 16

• ± 4
• ± 8
• 4
• 8

Tags

CCSS.8.EE.A.2

3x² = 12

• ± 2
• 2
• ± √12
• ± 4

Tags

CCSS.8.EE.A.2

7x² + 1 = 8

• ± 1
• ± 7
• ± √7
• ± 8

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
k² - 6 = 43

• k = √37
• k = 37 or - 37
• k = 7, k = -7
• no solution

Tags

CCSS.HSA-REI.B.4B

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

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

Tags

CCSS.HSA-REI.B.4B

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

• 25
• ±25
• 5
• ±5

Tags

CCSS.8.EE.A.2

3x² - 1 = 14

• 5

• -2.24

• -2.24, 2.24

• 2.24