Question

Hello ,Please reply me ​

Answer 1

Answer:

$= \frac{30}{ \sqrt{20} + \sqrt{5} } \\ \\ = \frac{30}{2 \sqrt{5} + \sqrt{5} } \\ \\ = \frac{30}{3 \sqrt{5} } \\ \\ = \frac{10}{ \sqrt{5} } \\ \\ = \frac{10}{ \sqrt{5} } \times \frac{ \sqrt{5} }{ \sqrt{5} } \\ \\ = \frac{10 \sqrt{5} }{5} \\ \\ = 2 \sqrt{5}$

Answer 2

I think thats the answer