Question

Express 5 upon √7-√2 with rational denominator ​

Answer 1

Answer:

$\frac{5}{ \sqrt{7} - \sqrt{2} } \times \frac{ \sqrt{7} + \sqrt{2} }{ \sqrt{7} + \sqrt{2} } \\ \frac{5( \sqrt{7} - \sqrt{2}) }{ {( \sqrt{7}) }^{2} - {( \sqrt{2} )}^{2} } \\ \frac{5( \sqrt{7} - \sqrt{2} )}{7 - 2} \\ \frac{5( \sqrt{7} - \sqrt{2} )}{5} \\ \sqrt{7} - \sqrt{2}$

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