Why does multiplying two negative numbers equal a positive number?

Question

Why does multiplying two negative numbers equal a positive number?

In: 1210

Answer 1

A trick I was taught to remember what the result should be: Positive numbers have an implied + in front of them. If the symbols ( – or +) in front of the numbers you are multiplying match, the result will be positive. If they don’t, the result will be negative.