An exponent is a way to represent a product when the same factor is repeated a certain number of times in a multiplication.
a is called the base or root. n is called the exponent or power.
a n ⋅ a p = a n + p
a n ⋅ b n = ( a ⋅ b ) n
a n a p = a n − p
a n b n = ( a b ) n
( a n ) p = a n ⋅ p
( a b ) n = a n b n
a − n = 1 a n