Solving Simple Quadratics by Taking Square Root

x² = 16

• ± 4

• ± 8

• 4

• 8

x² + 4 = 68

• ± 8

• ± √8

• 8

• ± 64

3x² = 12

• ± 2

• 2

• ± √12

• ± 4

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve the equation using square roots.
x² = 121

• 60.5

• ± 11

• ± 12

• 11

• m=±81
• m=±9
• m=±3
• No real solution

x²=25

• x = 5

• x = -5

• x = ±25

• x = ±5

• {7.48,-7.48}

• No Solution

• {56,-56}

• {26,-26}

• {49,-49}

• {8,-8}

• {7,-7}

• No Solution

Solve

• {49,-49}

• {8,-8}

• {7,-7}

• {7i, -7i}