When the radical symbol is used without an "index" indicated, it is implied to be the "square root" of a value.
Otherwise, the

**type **of "root" is determined by the appearance of the "index" value.

If the **index is an odd **number, the radicand can be a negative value.

Raising a negative real number to an odd power will result in a negative value.

(-2)(-2)(-2)(-2)(-2) = -32

If the **index is an even** number, the radicand can **not** be a negative value.

It is not possible to raise a negative real number to an even power and get a negative value.

(*Note:* Our work in this unit is dealing with real numbers, not complex numbers.)