1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Polynomial division

  1. Sep 21, 2009 #1
    3rd roots in denominator

    1. The problem statement, all variables and given/known data
    [tex]\frac{ \sqrt[3]{25} + \sqrt[3]{5x} + \sqrt[3]{x^2} }{ \sqrt[3]{x} - \sqrt[3]{5} }[/tex]

    Rewrite the expression with no roots in the denominator and it being simplified as far as possible.

    2. Relevant equations

    3. The attempt at a solution
    I'm.. stumped. Seriously. How on earth do I get rid of them? I can't do the conjugate, I can't take the denominator to the power of three, I can't take it times (x3 + 53) and I'm out of ideas.

    Sorry about it being called Polynomial division, mishap on my behalf.
    Last edited: Sep 21, 2009
  2. jcsd
  3. Sep 21, 2009 #2


    User Avatar
    Homework Helper

    Try to use the identity


  4. Sep 22, 2009 #3
    Thank you! I'd never have figured that one out myself
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook