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. 
   Phys.org - latest science and technology news stories on Phys.org

   • • World's fastest man-made spinning object could help study quantum mechanics
   • • Big tech firms agree on 'data portability' plan
   • • Sahara dust may make you cough, but it's a storm killer
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

• Log in with Facebook
• Log in with Twitter

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in