Square Roots & Cube Roots

 $\sqrt{16}=?$  

• 8

• 2

• 4

• 32

 $9^2=18$  True or false?

• True

• False

 $-\sqrt{144}$  

• 12

• -12

• -72

• none of the above (imaginary number) 

 $3_{\sqrt{8}}$    (cube root of 8) 

• 2

•  $\pm2$  

• -2

• None of the above 

 $3_{\sqrt{-1}}$  (cube root of -1)

•  $\pm1$  

• 1

• -1

• none of the above (imaginary number)

The area of a square painting is 81  $cm^2$  . What is the length of one side?

• 9

• -9

• 40.5

• -40.5

 $\sqrt{\left(\frac{16}{81}\right)}\ \ =\ ?$  

•  $\frac{8}{27}$  

•  $\frac{8}{9}$  

•  $\frac{4}{9}$  

•  $\frac{4}{3}$  

Write an equation for the phrase "Two cubed is equal to the square root of x".

• $4=\sqrt{16}$

• $2^2=\sqrt{x}$

• $2^{3\ }=\sqrt{x}$

• $\sqrt{x}=2$

Solve for x when x³ = 125

• 5
• 10
• 12
• 15

The inverse operation for SQUARING a number is finding the CUBE root?

• true

• false