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=![[( x^{1/2} + x^{-1/2} )/( x^{1/2} + x^{-1/2} )-x] ^{-3/4} =(1-x) ^{-3/4} [( x^{1/2} + x^{-1/2} )/( x^{1/2} + x^{-1/2} )-x] ^{-3/4} =(1-x) ^{-3/4}](https://tex.z-dn.net/?f=%5B%28+x%5E%7B1%2F2%7D+%2B+x%5E%7B-1%2F2%7D+%29%2F%28+x%5E%7B1%2F2%7D+%2B+x%5E%7B-1%2F2%7D+%29-x%5D+%5E%7B-3%2F4%7D+%3D%281-x%29+%5E%7B-3%2F4%7D+)
=27/8
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