f'(x) X/(x^2-4)^(1/2)

hi!! im stuck on this and dont understand how to find its derivitive. ive tried multipling by the conjugate and i cant get anything to cancel. it is an ap test question that my teacher gave us for homework.

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- Oct 15th 2009, 11:50 PM #1

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- Oct 16th 2009, 12:19 AM #2

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- Oct 16th 2009, 12:45 AM #4

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- Oct 16th 2009, 12:49 AM #5