Solve Equations by Square Root

Solve : x² = 16

• ± 4

• ± 8

• 4

• 8

Solve by taking square roots:

(x + 2)² = 25

• x = 5 or -5

• x = 3 or -3

• x = 7 or -3

• x = -7 or 3

Solve by taking square roots:

4x² - 1 = 48

• x = 7/2 or -7/2

• x = 2/7 or -2/7

• x = 49/4 or -49/4

• x = 47/4 or -47/4

Solve by taking the square root:

4x² = 100

• ±10

• ±25

• ±5

• 5

• x = 49
• x = 53
• x = 45
• x = 18

• x = 12
• x = 24
• x = 144
• x = 121

• x = 5
• x = -6
• x = 14
• x = -1

• x = 81
• x = -9
• x = 9
• x = -81

Solve by taking square roots:

3 + r² = 12

• r = 3, r = - 3

• r = -3

• r = 3

• x = 2
• x = 4
• x = 7
• x = 9