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Solve the following: 1) 5/2root(5) - 7/2root(5) + root(5 )

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$=\frac{5}{2 \sqrt{5}} - \frac{7}{2 \sqrt{5}} + \sqrt{5 } \\\\ = \frac{5-7}{2 \sqrt{5}} + \sqrt{5 } \\\\ = \frac{-1}{\sqrt{5}} + \sqrt{5 } \\\\ = \frac{-1+5}{\sqrt{5}} \\\\ = \frac{4}{\sqrt{5}} \\\\$

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Ravindra Pindel

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