Question

-20:(-"radical"5) = ?

Answer 1

$\frac{-20}{-\sqrt{5}}= ^{ \sqrt{5})}\frac{20}{ \sqrt{5}}= \frac{20 \sqrt{5}}{5}=\boxed{4 \sqrt{5}}$

Answer 2

-20/-√5 = 20√5/5=4√5