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24-10-2014
Mathematics

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how do you do radical 128 with an index of negative 3

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Аноним Аноним

25-10-2014

[tex]128=2^7\\\\128^{-3}=\left(2^7\right)^{-3}=2^{7\cdot(-3)}=2^{-21}=\frac{1}{2^{21}}[/tex]

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