Solving Quadratics (Using Square Roots)

x² - 5 = -4

• 1, -1
• 3, -3
• 3
• 1

Tags

CCSS.8.EE.A.2

x² =25

• 5
• -5
• 5, -5
• No Real Solutions

Tags

CCSS.8.EE.A.2

3x² - 1 = 14

• 5
• -√5
• -√5, √5
• √5

Tags

CCSS.8.EE.A.2

-x² +16 = 0

• No Real Solutions
• 4
• -4
• 4, -4

Tags

CCSS.HSA-REI.B.4B

-3x² = 99

• √33
• √33, -√33
• No Real Solutions
• -√33

Tags

CCSS.8.EE.A.2

9x² = 16

• 4/5, -4/5
• 4/5
• -4/5
• No Real Solutions

Tags

CCSS.8.EE.A.2

Solve for x: 
(x+6)²=49

• x=7,12
• x=±7
• x=1,-13
• x=43,-55

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
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Tags

CCSS.8.EE.A.2

Solve
(x-5)² = 25

• ±0
• ±10
• 10, 0
• -10, 0

Tags

CCSS.HSA-REI.B.4B