Wednesday, October 21, 2009

Whats wrong with the fourth root of 81 is 3?

The thing that is wrong with this problem is that it should be the fourth root of 81 is the absolute value of 3, becuase 3x3x3x3 is 81, as is -3x-3x-3x-3.
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1 comment:

Mrs. D. Jacobe said...

Good explanation:) Sorry I didn't respond sooner.

October 25, 2009 at 7:05 PM

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