# How do you simplify sqrt8-sqrt66?

The expression $\sqrt{8} - \sqrt{66}$ simplified is $2 \sqrt{2} - \sqrt{66}$ .
Problem: Simplify $\sqrt{8} - \sqrt{66}$ .
$\sqrt{8} = \sqrt{2 \times 4} = \sqrt{2} \sqrt{4} = 2 \sqrt{2}$
$\sqrt{66}$ cannot be simplified further.
$\sqrt{8} - \sqrt{66} = 2 \sqrt{2} - \sqrt{66}$