Solving with Square Roots

5x²=-15

• 3, -3
• 1.7, -1.7 
• 1.5, -1.5 
• no solution 

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

2x²=98

• 49, -49
• 9.89, -9.89
• 7, -7
• no solution 

Tags

CCSS.8.EE.A.2

Solve by square roots (SADMEP)
k² - 6 = 43

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

Tags

CCSS.8.EE.A.2

Solve by square roots (SADMEP)
x² - 64 = 0

• 64
• 8
• 8 or -8
• 1 or -64

Tags

CCSS.HSA-REI.B.4B

x² -4 = 77

• 9
• -9
• No Real Solutions
• 9, -9

Tags

CCSS.8.EE.A.2

-7x² +21 = 14

• 1
• -1
• NO Real Solutions
• 1, -1

Tags

CCSS.8.EE.A.2

10 - 3a² = -2

• -2 and 2

• -4 and 4

• -12 and 12

• 4

Tags

CCSS.8.EE.A.2

x² = 16

• ± 4
• ± 8
• 4
• 8

Tags

CCSS.8.EE.A.2

-5x² = -50

• ± 5
• ± 10
• ± √10
• -10

Tags

CCSS.8.EE.A.2

x² + 4 = 68

• ± 8
• ± √8
• 8
• ± 64

Tags

CCSS.8.EE.A.2