Finding the Square Root

x²=25

• x = 5

• x = -5

• x = ±25

• x = ±5

Solve x²− 4 = 0

•  2 and -2

• 4 and -4

• 16 and -16

• 8 and -8

x² = 8

• x = ±4

• x = ±2√2

• x = ±4√2

• x = ±√4

Solve using square roots.
k² - 6 = 43

• k = √37

• k = 37 or - 37

• k = 7, k = -7

• no solution

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve using square roots.
4m² - 100 = 0

• m=25, -25

• m=96

• m=5, -5

• m=-96

2x²=100

• x = √25

• x = ±5√2

• x = √100

• x = ±√5

Evaluate
√36

• 6

• -9

• 18

• -18

Evaluate √72. Round your answer to the nearest Whole Number. 

• 7.2

• 7

• 8

• 9

Solve:
x² - 49 = 0

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1