Equations with Exponents and Roots

Solve. Don't forget to check your answers!

• 6

• 9

• -6

• -9

Simplify:

• A

• B

• C

• D

Solve for x:

x^3/2 + 7 = 71

• 2

• 4

• 16

• 8

Change to rational exponent form.

Answer explanation

power over root

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

• Divide both sides by 3

• Add 2 to both sides

• Cube root both sides

• Raise both sides to the power of 3

• x = 9

• x = 82

• x = -9

• x = -82

• x = -14

• x = 14

• No Solution

• x = 28

• A
• B
• C
• D

• x = 9

• x = -9

• x = 21

• x = -21