Edit: The next solution is correct in saying that you should rationalize the denominator (forgot all about that...); however, he went about rationalizing the denominator in the wrong way.
To rationalize the denominator of , you need to multiply both the numerator and denominator by 6 copies of . This way, you'll end up with
which will simplify to
So where
Note: I skipped a bunch of steps. Let me know if you need to see them. Also, you can verify your answer by graphing the original expression and the final expression.
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