Solve Quadratic Equations by Taking the Square Root

• A

• B

• C

• D

Tags

CCSS.8.EE.A.2

• A

• B

• C

• D

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
(x - 7)² = 99

• x = 7 ± 3√11

• x = -7 ± 3√11

• x = -11 ±√7

• x = 11 ±√7

Tags

CCSS.HSA-REI.B.4B

(a)  

Tags

CCSS.8.EE.A.2

• 5, -5

• 2.23, -2.23

• 2.3

• 5

Tags

CCSS.8.EE.A.2

• ±23.25
• ±5
• ±25
• No real solution

Tags

CCSS.8.EE.A.2

Solve by taking square roots:

5m² + 1 = 6

• m = 1

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:

x² = 49

• -7

• 7

• 49

• ±7

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.

• ±81

• ±9

• ±3

• No real solution

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Tags

CCSS.8.EE.A.2