Question

30/√20+√5 is equal to​

Answer 1

Step-by-step explanation:

an open-air fire in a camp, used for cooking and as a focal point for social activity.

"after cooking, we sat around a campfire swapping stories"

Answer 2

Answer:

The answer is $2\sqrt 5$

Step-by-step explanation:

  $\dfrac{30}{\sqrt{20}+\sqrt5}$

$=\dfrac{30}{\sqrt{4\times 5}+\sqrt5}\\\\=\dfrac{30}{\sqrt{4}\times \sqrt {5}+\sqrt5}\\\\=\dfrac{30}{2\times \sqrt {5}+\sqrt5}\\\\=\dfrac{30}{(2+1) \sqrt {5}}=\dfrac{30}{3\sqrt 5}\times \dfrac{\sqrt 5}{\sqrt 5}$   , rationalize denominator

$=\dfrac{30\sqrt 5}{3(5)}=\dfrac{30\sqrt 5}{15}=2\sqrt5$,cancel common terms from numerator and denominator