Exponents represent the power to which a number is raised. Rules for
exponents follow.
a^{n} = a * a * a * ... n times (a to the nth power)
a^{m}a^{n} = a^{m+n}
a^{m}/a^{n} = a^{m-n}
(a^{m})^{n} = a^{mn}
a^{-n} = 1/a^{n}
a^{1/n} = nth root of a
a^{1} = a
a^{0} = 1