# What is the square root of 28?

Apr 14, 2018

$\sqrt{28} = \sqrt{4 \cdot 7} = 2 \sqrt{7}$

#### Explanation:

$\sqrt{28} = \sqrt{4 \cdot 7} = 2 \sqrt{7}$

Apr 14, 2018

$\sqrt{28} = 2 \sqrt{7}$
28 = 7 . ${2}^{2}$
$\sqrt{28} = \sqrt{7 \left({2}^{2}\right)} = 2 \sqrt{7}$