Solve radical equations

• -5

• 5

• 3

• -3

Answer explanation

Get what's under the radical by itself first.

Then, since the index to the radical is 2, raise each side of the equation to the 2nd power.

• Yes, it is a solution.

• No, it's an extraneous solution.

Answer explanation

• 42

• 45

• 50

• 47

Answer explanation

First, get what's under the radical by itself.

Then, raise both sides to 2nd power since since the index to the radical is 2.

• Yes, it is a solution.

• No, it is an extraneous solution.

Answer explanation

• -9

• -2

• 15

• 20

Answer explanation

First, get what's under the radical by itself.

Then, raise both sides to 4th power since since the index to the radical is 4.

• Yes, it is a solution.

• No, it's an extraneous solution.

Answer explanation

• 18

• 2

• 9

• 15

Answer explanation

Get what's under the radical by itself first.

Then, since the index to the radical is 2, raise each side of the equation to the 2nd power.

• Yes, it is a solution.

• No, it is an extraneous solution.

Answer explanation