### 2 (two)

We find the **number 2** so obvious that we sometimes omit it.

##### Explanation

You write the square root of 3 as

and actually it is

You never write it this way, because everyone knows of course that it is the 2^{nd} root if there is nothing indicated. If you put it in more detail, it becomes

It is a form of exponentiation, because you can also write it as

and, of course, as

Sometimes this is more comfortable in a calculation.