4(-2)=- 8
When you add numbers of the same value, you can take that number and multiply it by how ever many times the number is written in the expression. -2 shows up 4 times with the same function being done to it each time. Multiply -2 by 4. A negative times a positive leaves you with a negative product. If 2 times 4 is 8, -2 times 4 is -8.
