**Parts of a radical**

- The radical sign is a symbol that means "root of".
- The radical symbol looks like a check mark.
- The numbers or variables found under the radical is the radicand The number tucked in the radical symbol is the index.
- The index indicates what root you are taking.
- An index of 3 indicates a cube root, an index of 4 indicates a fourth root index of 5 indicates a fifth root
- A square root usually does not have an index written.

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