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Nov26-09, 02:16 PM
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Draven
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-3^2
I thought powers were things like (using the example in the title): -3 * -3 = 9
But when I enter -3^2 in my calculator, I get -9. I thought a negative multiplied by a negative was a positive. What's going on here?
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Nov26-09, 02:19 PM
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pbandjay
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Re: -3^2
It squares the three before multiplying by negative one.
(-3)
2
= (-3)(-3) = 9
-3
2
= -(3)(3) = -9
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Nov26-09, 02:21 PM
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Doc Al
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Re: -3^2
The calculator assumes that you mean -3
2
, not (-3)
2
. Try entering 3, then using the +/- key to change its sign, then hit the square key.
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Nov26-09, 02:31 PM
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Draven
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Re: -3^2
Ah, I see! Thanks very much!
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