Exponents and Roots

Square root of 16 is....

• 8

• 4

• 2

• 3

True or false?

 $9^2=18$  

• True

• False

Is 225 a perfect square?

• Yes

• No

The square root of 256 is...

• 15

• 18

• 13

• 16

If  $b^2=361$  then  $b=?$  

• 19

• 20

• 16

• 17

4

• Is a perfect square.

• Is not a perfect square.

What is the cube root of 1?

• 1

• -1

• ±1

• none

 $\sqrt{9}\times\sqrt{100}$ 

• 30

• -200

• 900

• 90

Throwback: simplify

 $\left(x^3\right)\left(x^2\right)$  

• x⁵

• 5x

• x⁶

• 2x⁵

Throwback: Simplify to an equivalent expression BUT leave in exponent form.

 $4^3\cdot4^5$  
                  

• 4⁸

• 16⁸

• 4¹⁵

• 16¹⁵