Understanding irrational numbers

What does this simplify to?

• 4 or -4

• 5 or -5

• 6 or -6

• 7 or -7

Fill in the following statement with "either", "never", or "always" in order to make the statement true:

Square roots of perfect squares will _________________ be irrational numbers.

12

• $\sqrt{132}$

• $\sqrt{140}$

• $\sqrt{144}$

• $\sqrt{116}$

Simplify √18

• 3√2
• 9√2
• 3√9
• 2√3

#14

When simplifying cube root expressions, you look for groups of _____ with variables.

• A. One

• B. Two

• C. Three

• D. I don't know

Simplify the radical expression:
 $\sqrt{151r^2s^3}$  

•  $rs\sqrt{151s}$  

•  $151rs\sqrt{s}$  

•  $10rs\sqrt{15s}$  

•  $r^2s^2\sqrt{151s}$  

√600

• 10√6

• 100√6

• 6√10

• 6√100

49 =

• 7

Simplify √300

• 3√100

• 3√10

• 100√3

• 10√3