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

User Gqli
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128=2^7\\\\128^(-3)=\left(2^7\right)^(-3)=2^(7\cdot(-3))=2^(-21)=(1)/(2^(21))
User Kyle Lin
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