Question

how to do this ? rationalise the question pls tell​

Answer 1

Answer:

$\frac{ \sqrt{7} + \sqrt{5} }{2 \sqrt{5} } \\ \frac{ \sqrt{7} + \sqrt{5} }{2 \sqrt{5} } \times \frac{2 \sqrt{5} }{2 \sqrt{5} } \\ \\ \frac{ \sqrt{7} + \sqrt{5}(2 \sqrt{5)} }{(2 \sqrt{5) {}^{2} } } \\ \frac{2 \sqrt{35} + 10}{20}$