Exponential Notation
Exponents are used to indicate repeated multiplication of the same
number.
For example, we use exponential notation to write:
5 Â· 5 Â· 5
Â· 5 Â· 5^{4}
5^{4} is read â€œfive to the fourth power.â€
In the expression 5^{4}:
â€¢ The base, 5, is the repeated factor.
â€¢ The exponent, 4, indicates the number of times the base appears as a
factor. An exponent is also called a power.
Example 1
Find: 2^{3}.
Solution
The base is 2 and the exponent is 3.
Example 2
Rewrite using exponential notation: 10 Â· 10
Â· 10 Â· 10
Â· 10 Â· 10
Solution
There are six factors. Each is 10.
Therefore, the base is 10 and the
exponent is 6. 

