# What is the set of numbers to which sqrt(82/20) belong?

Nov 9, 2016

Being a radical (root) expression, it would at first belong to the set of irrational numbers.

#### Explanation:

We could see if things can be taken out from under the radical sign:
$= \sqrt{\frac{41 \times \cancel{2}}{10 \times \cancel{2}}}$