Question

rationalize : 1 / V7 + V2​

Answer 1

$\huge\fbox\red{\fbox\green{Done \: by \: Aritra \: Kar}}$

Step-by-step explanation:

$\frac{1}{ \sqrt{7} + \sqrt{2} } \\ = > \frac{1 \times ( \sqrt{7} - \sqrt{2)} }{( \sqrt{7} + \sqrt{2}) ( \sqrt{7} - \sqrt{2}) } \\ = > \frac{ \sqrt{7} - \sqrt{2} }{ { \sqrt{(7)} }^{2} - { \sqrt{(2)} }^{2} } \\ = > \frac{ \sqrt{7} - \sqrt{2} }{7 - 2} \\ = > \frac{ \sqrt{7} - \sqrt{2} }{5} (ans)$