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Homework Help: Simple expression

  1. May 18, 2008 #1
    can someone please show how 2/5(sqrt(3)^5) = 18sqrt(3) / 5

  2. jcsd
  3. May 18, 2008 #2


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    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.
  4. May 18, 2008 #3
    no, i cant find n.

    also, this isn't a homework or school related question. I cant see why a warning was necessary.
  5. May 19, 2008 #4
    [tex]\sqrt{3}[/tex] is three raised to what power?
  6. May 19, 2008 #5


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    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.
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