# How do you simplify 2/the square root of 5?

$\frac{2}{\sqrt{5}} = \frac{2 \sqrt{5}}{5}$
To rationalize the denominator of a fraction you can multiply both numerator and denominator by $\sqrt{5}$
$\frac{2}{\sqrt{5}} = \frac{2 \sqrt{5}}{\sqrt{5} \sqrt{5}} = \frac{2 \sqrt{5}}{5}$