Rationalising the denominator by Boxed Rockets

Rationalise the Denominator

\frac{3}{\sqrt{5}}

\frac{3 \sqrt{5}}{5}

\frac{6}{7 \sqrt{10}}

\frac{3 \sqrt{10}}{35}

\frac{8 + \sqrt{2}}{\sqrt{2}}

4 \sqrt{2} + 1

\frac{2 - 6 \sqrt{6}}{\sqrt{6}}

\frac{\sqrt{6} - 18}{3}