Question

simplify.
\sqrt{18}

Explanation:

Step1: Factor out perfect square

$18 = 9 \times 2$

Step2: Split square root

$\sqrt{18} = \sqrt{9 \times 2} = \sqrt{9} \times \sqrt{2}$

Step3: Simplify perfect square root

$\sqrt{9} = 3$

Answer:

$3\sqrt{2}$