Question

simplify.
remove all perfect squares from inside the square root.
\sqrt{63} = \square

Explanation:

Step1: Factor out perfect square

$\sqrt{63} = \sqrt{9 \times 7}$

Step2: Split the square root

$\sqrt{9 \times 7} = \sqrt{9} \times \sqrt{7}$

Step3: Simplify perfect square root

$\sqrt{9} \times \sqrt{7} = 3\sqrt{7}$

Answer:

$3\sqrt{7}$