Answer
A radical involving square root can be simplified by (i) factoring the radicand (the number inside the radical sign) so that one of the factors is a perfect square; then (ii) extracting out the square root of that perfect square factor.
Please refer to the illustration below.
Work Step by Step
A radical involving square root such as $\sqrt{50}$ can be simplified by (i) factoring the radicand (the number inside the radical sign) so that one of the factors is a perfect square; then (ii) extracting out the square root of that perfect square factor.
To illustrate:
\begin{align*}
\sqrt{50}&=\sqrt{25(2)}\\
&=\sqrt{5^2(2)}\\
&=5\sqrt2
\end{align*}
