Question 471973
{{{(3x)^(-1/3) = 1/((3x)^(1/3))}}}
= {{{1/root(3,1/3x)}}}
= {{{root(3,1/9x^2)/(1/3x)}}}
= {{{3x*root(3,1/9x^2)}}}
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Pick the one you think is simpler.