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Why is 2 plus -2 equals 0 while 2 x -2 equals -4 Isn't multiplication just fast addition?
Wiki User
∙ 14y ago
Well, now isn't 2 plus 2 equals 4
2 times 2 equals 4
2 times 2 equals 2 plus 2 equals 4
2 times -2 equals 2 plus -2 equals 0 WAIT 2 times -2 equals negative 4 according to mathematics. No teacher nor professor has been able to even do more than stutter explaining this.
3 times 3 equals 9
3 times -3 equals -9
So why is the digit 2 different?
Wiki User
∙ 14y ago
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