Solving Radical Equations Extraneous

• No Solution

• 2

• 1/2

• 3.74

• 45

• 4

• 90

• No Solution

• 15

• 7.2

• 16

• No Solution

To undo a square root in an equation, you need to

• multiply both sides by 2

• square both sides

• take the square root of both sides

• divide both sides by 2

Why should you check your answer to a radical equation?

• To make sure you didn't make an error

• To make sure the answer is not extraneous

• Both Options

What should be the first step you take to solve the equation below?

• Divide both sides by 2

• Square both sides

• Add 5 to both sides

• Subtract 31 from both sides

Solve for x

• 24

• 4

• 8

• 64

Solve

• -14

• 14

• no solution

• 28

• x = - 9, x = 7

• x = 7

• x = 9

• x = 9, x = - 7

• 4

• -4

• 2

• -2