Created
January 20, 2012 15:56
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-2*-2 = 2*2. In other words, when you multiply 2 negative integers it is the same as multiplying the same two positive integers. -x*-y = x*y.
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| #-2*-2 = 2*2. In other words, when you | |
| #multiply 2 negative integers it is the | |
| #same as multiplying the same two positive | |
| #integers. -x*-y = x*y | |
| x = 2 | |
| y = 3 | |
| puts ((x*y + x*-y) + -x*-y == x*y) == | |
| ((x*y + x*-y) + -x*-y == -x*-y) |
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