Question 696472
{{{root(3,27(x-8)^3)}}}


{{{root(3,3^3(x-8)^3)}}}


{{{root(3,(3(x-8))^3)}}}


{{{root(3,(3x-24)^3)}}}


{{{3x-24}}}


So {{{root(3,27(x-8)^3)=3x-24}}}