Solving by Square Root

Solve:
x² - 49 = 0

• x = -7, x = 7
• x = -7
• x = 7
• x = -7, x = 1

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.2

Solve by taking square roots:
5m² + 1 = 6

• m = 0
• m = 1 or -1
• m = √7
• m = 7/5 m = -7/5

Tags

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4

Solve.

(2x - 4)² = 16

• x = 4

• x = 10

• x = -2

• x = 0, 4

Tags

CCSS.HSA.REI.B.4

Solve.

k² - 6 = 43

• k = √37

• k = ±37

• k =±7

• No Real Number Solution

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Solve.

5b² - 4 = 41

• b = ±9

• b = ±3

• b = ±8

• No Real Number Solution

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

Solve.

4m² - 100 = 0

• m= ±25

• m=96

• m= ±5

• No Real Number Solution

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Solve.

x² - 4 = 76

• No Real Number Solution

• x = ±4√5

• x = ±80

• x = ±5√4

Tags

CCSS.HSA.REI.B.4

Solve.

9x² = 16

• x = ±4/3

• x= 4/3

• x= -4/3

• No Real Number Solutions

Tags

CCSS.HSA.REI.B.4

 $Solve\ by\ the\ square\ root\ property.\ \ x^2=15$  

• 3, 5

•  $\pm\sqrt{15}$  

•  $\pm15$  

•  $\pm3\sqrt{5}$  

 $\left(x-5\right)^2=21$  

•  $\pm\sqrt{21}$  

•  $5\pm\sqrt{21}$  

•  $\pm\sqrt{26}$  

•  $5\pm\sqrt{26}$