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1. The problem statement, all variables and given/known data

Find the four roots of:

https://www.physicsforums.com/attachment.php?attachmentid=39371&stc=1&d=1317233718

2. Relevant equations

Calculus: p.6 Polynomials and Rational functions

3. The attempt at a solution

Pretty much stuck on starting it. I can't really find a way to start factoring it.

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# Homework Help: Need help solving an quartic equation.

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