what is 3 square root of 135?
A.

5 3 root of 2

B.

2 3 root of 5

C.

5 3 root of 3

D.

3 3 root of 5

Question

what is 3 square root of 135?
  A. 
 
5 3 root of 2
   
   

 
 

  

  B. 
 
2 3 root of 5
   
   

 
 

  

  C. 
 
5 3 root of 3
   
   

 
 

  

  D. 
 
3 3 root of 5

ittybitty14 · Answer

MEDAL AND FAN!!!!!!!!!!!

welshfella · Answer

first find the prime factors of 135

ittybitty14 · Answer

I think it's 3^3 x 5

welshfella · Answer

its 3*3*3*5

can we get a perfect square from these numbers?

ittybitty14 · Answer

Yes?

welshfella · Answer

oh i misread the question!
you want the cube root of 135   
($$\sqrt[3]{135}$$

mathmale · Answer

If the index of your root is 2, you have a square root.
If the index is 3, you have a cube root (not a 3 square root).

welshfella · Answer

= $$\sqrt[3]{27} *  \sqrt[3]{5}$$

mathmale · Answer

I agree with welshfella:  you want the third root of 135.

Look at the way he has factored 135.  What do you think was his purpose in doing that?

welshfella · Answer

yes  the '3 square root' confused me.

mathmale · Answer

What is the "nice" third root of 27?  Does 5 have a "nice" third root (i. e., with NO decimal fraction)?