Question

root 7 + root 5 upon root 7 minus root 5

Answer 1

answer is 6 + root 35

Answer 2

Ans.
$\frac{ \sqrt{7} + \sqrt{5} }{ \sqrt{7} - \sqrt{5} } \\ = \frac{ (\sqrt{7} + \sqrt{5})( \sqrt{7} + \sqrt{5}) }{( \sqrt{7} - \sqrt{5})( \sqrt{7} + \sqrt{5}) } \\ = \frac{7 + 2 \sqrt{35} + 5 }{7 - 5} \\ = \frac{12 + 2 \sqrt{35} }{2} \\ = 6 + \sqrt{35}$