Final answer:
The value of the expression negative infinity times negative infinity is 1.
Step-by-step explanation:
The expression negative infinity times negative infinity can be evaluated using the concept of limits in calculus. When both factors approach negative infinity, the product can be determined by applying L'Hôpital's Rule. In this case, applying L'Hôpital's Rule would yield a limit of 1. This means that the value of the expression negative infinity times negative infinity is 1.