Question 920861
{{{(-64)^(4/3)}}}


{{{root(3,(-64)^4)}}}


{{{root(3,(-1)^4(64)^4)}}} ....{{{(-1)^4=1}}} and this eliminates minus sigh


{{{root(3,64^4)}}}


{{{root(3,64^3*64)}}}


{{{64root(3,64)}}}


{{{64root(3,4^3)}}}


{{{64*4}}}


{{{256}}}