Question

question
express in simplest radical form.
$sqrt{45}$

Explanation:

Step1: Factor out perfect square

$\sqrt{45} = \sqrt{9 \times 5}$

Step2: Split the radical

$\sqrt{9 \times 5} = \sqrt{9} \times \sqrt{5}$

Step3: Simplify perfect square root

$\sqrt{9} \times \sqrt{5} = 3\sqrt{5}$

Answer:

$3\sqrt{5}$