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(-125)^(2/3)
 Aug 25, 2013
 #1
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(-125)^(2/3) = sqrt[3]{-125^2} = sqrt[3]{125^2} = sqrt[3]{(5^3)^2} = sqrt[3]{(5^2)^3} = 5^2 = 25
 Aug 26, 2013

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