Question

Simplify the radical expression by rationalizing the denominator.

Answer 1

$\frac{2}{\sqrt{30}} = \frac{2}{\sqrt{30}} \times \frac{\sqrt{30}}{\sqrt{30}} = \frac{2\sqrt{30}}{\sqrt{30}\times \sqrt{30}} = \frac{2\sqrt{30}}{30} = \huge{\boxed{\frac{\sqrt{30}}{15}}}$