Solving Equations by Taking the Square Root

Solve by taking square roots.

2x² - 8 =100

• x = ±√54

• x = ±3√6

• x = ± 9√6

• x = ±2√27

Solve by taking the square root: (x - 2) ² = 49

• 9 or -5

• ± 9

• ± 5

• ± 7

Solve using square roots.

• ± 1/4

• ± 9/36

• ± 1/2

• No real solution

• { 1 }

• { 1, 9 }

• { 9 }

• No Solution

Solve by taking square roots:

5m² + 1 = 6

• m = 1

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5

Solve by taking square roots: 3 + r² = 12

• r = 3, r = - 3

• r = -3

• r = 3

• x= 9, -9

• x= -49, 49

• x= 7, -7

• x= -5, 5

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve by taking square roots: 3 + r² = 12

• r = 3, r = - 3

• r = -3

• r = 3

Solve by taking the square root:

4x² = 100

• ±10

• ±25

• ±5

• 5