Final answer:
The Product of Powers Property is applied when multiplying exponential expressions with a common base, resulting in the addition of exponents.
Step-by-step explanation:
When exponential expressions with the same base are multiplied, the exponents are added to create a new exponent for the common base. This process is known as the Product of Powers Property, which states that when you multiply powers with the same base, you add the exponents. In the context of multiplying exponential expressions, for example, am × an = am+n, the exponents m and n are added to form a new exponent m+n for the common base a.