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U^-3=1/125 i dont know how to do this, please explain
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5 votes
U^-3=1/125 i dont know how to do this, please explain

User Peter Lawrence
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if u^ -3 = 1/125 then U ^ 3 = 125 ⇒ U = 5 :D i hope this help 
User Sampathsris
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