What is the square root of 90 simplified in radical form?
In our case, we can begin in the following way:
Since we don't have numbers we could further divide which yield a number other than
A pair of numbers counts as one number, namely the
Thus we can now write
We cannot find any more divisible factors, and we certainly don't have a pair of numbers, so we stop here and call it not simplify-able. The one and only answer is
We've found a pair, so we can simplify this one:
We proceed the same way and write