Question 150609
(4 / x^6) ^3 I need to simplify it 
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= (4/x^6)(4/x^6)(4/x^6)
multiply the coefficients and add the exponents to get

= 64/x^18
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Another way to do it:
(4/x^6)^3
= [4^3/x^(3*6)]

= 64/x^18
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Cheers,
Stan H.