An exponent is a number that tells how many times the base number is
used as a factor. For example, 3^{4} indicates that the base number 3
is used as a factor 4 times. To determine the value of 3^{4}, multiply
3*3*3*3 which would give the result 81.

If a negative number is raised to an even power, the result will be positive.

(-2)^{4} = -2 * -2 * -2 * -2 = 16

If a negative number is raised to an odd power, the result will be negative.

(-2)^{5} = -2 * -2 * -2 * -2 * -2 = -32

The negative number must be enclosed by parentheses to have the exponent apply to
the negative term.

Note that (-2)^{4} = -2 * -2 * -2 * -2 = 16

and -2^{4} = -(2 * 2 * 2 * 2) = -16

Exponents are written as a superscript number (e.g. 3^{4}) or preceded
by the caret (^) symbol (e.g. 3^4).

Some facts about exponents:

- Zero raised to any power is zero (e.g. 0
^{5} = 0)
- One raised to any power is one (e.g. 1
^{5} = 1)
- Any number raised to the zero power is one (e.g. 7
^{0} = 1)
- Any number raised to the first power is that number (e.g. 7
^{1} = 7)