Extraneous Roots

What is the extraneous root?

• 4

• 9

• -2

• 5

Find the extraneous root

• 2

• 7

• 4

• 16

Find the extraneous root/s

• A

• B

• C

• D

Root of a transformed equation that is not a root of the original equation because it was excluded from the domain of the original equation.

• Solution

• Extraneous Solution

• Zeroes

• Extra root

Solve for x and check for extraneous root/s. x + 4 = (x -2)²

• 4

• 2

• 5

• 0

• -7

• -7 and 7

• 7

Solve the following equation. Make sure to check for extraneous roots. 7\sqrt[]{x+5}=56

• -59

• 6

• 59

• -2.17

• -9

• -6

• 1

• 2

Solve the following equation. Make sure to check for extraneous roots. \sqrt[]{3x+9}=6

• -3

• 9

• 3

• 5

Solve the following equation. Make sure to check for extraneous roots. \sqrt[]{\frac{x}{5}}=2

• -20

• 20

• 25