Question

rationalise the dinominator of 1/root5+root2​

Answer 1

Answer:

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Answer 2

Answer:

$\frac{1}{ \sqrt{5} + \sqrt{2} } \\ \frac{1}{ \sqrt{5} + \sqrt{2} } \times \frac{ \sqrt{5} - \sqrt{2} }{ \sqrt{5} - \sqrt{2} }$

$\frac{ \sqrt{5} - \sqrt{2} }{ \sqrt{(5)} {}^{2} - \sqrt{(2) {}^{2} } } \\ \frac{ \sqrt{5} - \sqrt{2} }{5 - 2} \\ \frac{ \sqrt{5} - \sqrt{2} }{3}$