# What is the square root of 90 simplified in radical form?

##### 1 Answer

#### Explanation:

To simplify

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

More examples:

(1)

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

(2)

We've found a pair, so we can simplify this one:

(3)

We proceed the same way and write