Question

answer please fast. ​

Answer 1

Answer:

$\frac{1}{ \sqrt{5} + \sqrt{2} } + \frac{1}{ \sqrt{5} - \sqrt{2} } = (\sqrt{5} - \sqrt{2} ) \times \frac{1}{( \sqrt{5} - \sqrt{2} )( \sqrt{5} + \sqrt{2} )} +( \sqrt{5} + \sqrt{2} ) \times \frac{1}{( \sqrt{5} + \sqrt{2})( \sqrt{5} - \sqrt{2} ) } \\ \frac{( \sqrt{5} - \sqrt{2}) }{3} + \frac{( \sqrt{5} + \sqrt{2} )}{3 } \\ = \frac{2 \sqrt{5} }{3 }$