1.5 Square root/Cube root Equations

If I know the area of a square, how do I find the side length?

• I square the area.
• I divide the area by 2.
• I take the square root of the area.
• I divide the area by 4.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Solve

 $x^2=81$  

•  $\pm40.5$  

•  $\pm162$  
  

•  $\pm18$  
  

•  $\pm9$  
  

Tags

CCSS.8.EE.A.2

Solve

 $x^3=27$  

(a)  

Tags

CCSS.8.EE.A.2

What is the value of x in the equation
x² = 36

• 6
• -6
• ±6
• √6

Tags

CCSS.8.EE.A.2

What is the value of y in the equation
y² = 9

• 81
• ±3
• ±81
• 3

Tags

CCSS.8.EE.A.2

Which point most closely corresponds to ∛8 on the number line below? (Click the question to see the picture)

• P
• Q
• R
• S

Tags

CCSS.8.EE.A.2

Solve

 $x^3=125$  

• -5

• 5

• 4

• 25

Tags

CCSS.8.EE.A.2

Solve for x when x² = 144

• 4, -4
• 11, -11
• 12, -12
• 14, -14

Tags

CCSS.8.EE.A.2

Solve for p when p² = 100.

• 1,000, -1,000
• 10, -10
• 0.10
• -0.10

Tags

CCSS.8.EE.A.2

Solve

 $x^2=121$  

• 61, -61

• 44, -44

• 11, -11

• 14641, -14641

Tags

CCSS.8.EE.A.2