Simplify \(\sqrt{320}\) to \(8\sqrt{5}\).
\[4\times \frac{8\sqrt{5}}{2}\sqrt{5}\]
Simplify.
\[4\sqrt{5}\times \frac{8\sqrt{5}}{2}\]
Take out the constants.
\[\frac{4\times 8}{2}\sqrt{5}\sqrt{5}\]
Simplify \(4\times 8\) to \(32\).
\[\frac{32}{2}\sqrt{5}\sqrt{5}\]
Simplify \(\frac{32}{2}\) to \(16\).
\[16\sqrt{5}\sqrt{5}\]
Simplify.
\[16\sqrt{5\times 5}\]
Simplify \(5\times 5\) to \(25\).
\[16\sqrt{25}\]
Since \(5\times 5=25\), the square root of \(25\) is \(5\).
\[16\times 5\]
Simplify.
\[80\]
80
