## What is root settlement?

We already know that **6² = 36**. We will now learn the operation that allows us to determine which number squared equals** 36**.

, because **6** squared is **36**.

This operation is the inverse of potentiation and is called **root**.

**Another examples:**

, because 2³ = 8.

, because .

Thus:

**Notation**

**Reading**

(reads “square root of 81”)

(reads “64 cubic root”)

(reads “root fourth of 16”)

*Note*:

In square root indication, we can omit index 2. For example, .