Question

2 upon under root 5 + under root 3 + 7 upon under root 5 minus under root 3​

Answer 1

$\frac{2}{ \sqrt{5 } + \sqrt{3} } + \frac{ 7}{ \sqrt{5} - \sqrt{3} } \\ = \frac{2( \sqrt{5} - \sqrt{3}) + {7} ( \sqrt{5} + \sqrt{3} }{5 - 3} \\ =\frac{9 \sqrt{5} + 5 \sqrt{3} }{2} \\ answer$