Chapter 7 Test (Alg2)

Simplify.

• 11y⁵

• 121y⁵

• 11y²

• 11y¹⁰

Simplify.

• 5x³

• 125x³

• 5x⁶

• 25x³

Multiply, if possible. Then simplify. $\sqrt{-7}\cdot\sqrt{49}$   

• 7

• 14

• not possible

• 49

Simplify. Assume that all variables are positive. $\sqrt{20x^3}$   

•  $x\sqrt{10}$  

•  $2x\sqrt{5x}$  

•  $10x$  

•  $2\sqrt{10x}$  

Simplify ( $\sqrt{2}$  - 3)( $\sqrt{2}$  + 3)

• 7

• -7

•  $\sqrt{7}$  

• - $\sqrt{7}$  

Tags

CCSS.HSN.RN.A.2

 $\left(\sqrt{5}-7\right)^2$  

• 54 -  $\sqrt{70}$  

• 35

• 54 -  $14\sqrt{5}$  

•  $\sqrt{35}$  

Tags

CCSS.HSN.RN.A.2

 $\frac{1}{2+\sqrt{3}}$  

• 1

•  $2\ -\ \sqrt{3}$  

•  $\frac{\sqrt{3}}{2}$  

•  $\frac{1}{\sqrt{3}}$  

Tags

CCSS.HSN.RN.A.2

In the picture, the symbol represents the

• cube root of a number
• the radical sign
• cubing a number
• square cube root

2√5 + 4√5 =

• 6√10
• 8√10
• 8√5
• 6√5

Which of the following is correct? 

• Root over Power
• Power over Root