This week in Math 10 we went over entire and mixed radicals.

√80 is an example of an entire radical, the number is entirely under the root symbol.

2√20 and 4√5 are examples of mixed radicals.

Every mixed radical can be expressed as an entire radical, to determine if an entire radical (with an index of 2) can be expressed as a mixed radical we need to check if the number has a factor which is a perfect square.