Divide ( square root of 20)÷( square root of 5)

$\sqrt{20} \div \sqrt{5}$

Rewrite the division as a fraction.

$\frac{\sqrt{20}}{\sqrt{5}}$

Combine $\sqrt{20}$ and $\sqrt{5}$ into a single radical.

$\sqrt{\frac{20}{5}}$

Divide $20$ by $5$ .

$\sqrt{4}$

Rewrite $4$ as $2^{2}$ .

$\sqrt{2^{2}}$

Pull terms out from under the radical, assuming positive real numbers.

$2$