1. May 18, 2008 #1

   alpha01

   

   can someone please show how 2/5(sqrt(3)^5) = 18sqrt(3) / 5
   
   thanks

    

   alpha01, May 18, 2008
2. 
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3. May 18, 2008 #2

   cristo

   

   Staff Emeritus

   Science Advisor

   Can you write [tex]\sqrt{3}^5[/tex] as [itex]3^n[/itex] for some rational, n?
   
   I'm moving this to precalc HW forum.

    

   cristo, May 18, 2008
4. May 18, 2008 #3

   alpha01

   

   no, i cant find n.
   
   also, this isn't a homework or school related question. I cant see why a warning was necessary.

    

   alpha01, May 18, 2008
5. May 19, 2008 #4

   Tedjn

   

   [tex]\sqrt{3}[/tex] is three raised to what power?

    

   Tedjn, May 19, 2008
6. May 19, 2008 #5

   CompuChip

   

   Science Advisor

   Homework Helper

   You can also go the other way around, and divide out as much common terms from both sides as possible. Then see if you can prove the remaining identity.

    

   CompuChip, May 19, 2008

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