The exponent is a number that represents the power to which the base is raised. It is written as a superscript to the right of the base. For example, in the expression 2^3, the base is 2 and the exponent is 3.

To identify the base and exponent in an expression, look for the number or variable that is being raised to a power. The number or variable is the base, and the power to which it is raised is the exponent. For example, in the expression 5^2, the base is 5 and the exponent is 2.