If multiplication is just repeated addition, then why when 2 negatives get multiplied they become a positive?
In: Mathematics
Because you’re adding… negatively.
-2 x 2 = -4. Because that is -2, twice: -2 + -2 = -4.
-2 x -2 = 4.
**Not** because -2 + -2 = -4, which is the opposite of what the second -2 is telling us to do. But because 2 + 2 = 4.
It’s not subtraction (after all, -2 minus -2 is 0), it’s adding negatively.
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