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Factor k2 - 81. (k + 9)(k + 9) (k - 9)(k - 9) (k - 9)(k + 9)
k^2 - 81 = (k - 9)(k + 9)
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Asked 5/16/2014 7:48:17 AM
Updated 5/16/2014 3:16:50 PM
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k^2 - 81 = (k - 9)(k + 9)
Added 5/16/2014 3:16:50 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [5/16/2014 3:24:11 PM]
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