Radicals (also called roots) are the opposite of exponents. This is also called an inverse.

There are actually 3 parts to a radical. Square-roots don’t have an index because we assume it’s 2.

3. the INDEX

The index tells us how many identical factors we’re looking for.

Example: since the index is 3, and there are 3- 5’s

### Procedure

Example:

Step 1: determine the index

The index is the small number in the angle of the radical symbol.

The index is 3.