Solving Quadratic with Square Roots

x² + 4 = 68

• ± 8

• ± √8

• 8

• ± 64

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

(x - 2) ² = 9

• ± 3

• 5  or  -1

• -5  or  1

• ± 9

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

• m = 0

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5

Solve

2y² - 5 = 93

• y = 7

• y = ±7

• y = 24.5

• y = ±24.5

What are the roots of this quadratic function?

• -4 and 0

• 4 and 0

• -2 and 4

• 0

Use the graph to solve 2x² + 12x - 18 = 0

• x = 3 and x = -3

• x = 3

• x = -3

• No real solutions

Solve using square roots.

• ± 1/4

• ± 9/36

• ± 1/2

• No real solution

x² = 16

• ± 4

• ± 8

• 4

• 8

3x² = 12

• ± 2

• 2

• ± √12

• ± 4