Rationalise the denominator 25/root2 +root 5
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Step-by-step explanation:
\frac{25}{ \sqrt{5} + \sqrt{2} } =
\frac{25}{ \sqrt{5} + \sqrt{2} } \times \frac{ \sqrt{5} - \sqrt{2} }{ \sqrt{5} - \sqrt{2} } =
25( \frac{ \sqrt{5} - \sqrt{2} }{5 - 2} ) = \frac{25}{3} ( \sqrt{5} - \sqrt{2} )
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