Question

Please help me with the issue of the question

Answer 1

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

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

$\frac{5( \sqrt{7} - \sqrt{2} )}{7 - 2} = \frac{5( \sqrt{7} - \sqrt{2} ) }{5} = \sqrt{7} - \sqrt{2}$