Question 461059
{{{root(3,-8a^6b^15)}}}



{{{root(3,(-2)^3(a^2)^3(b^5)^3)}}}



{{{root(3,(-2)^3)*root(3,(a^2)^3)*root(3,(b^5)^3)}}}



{{{-2a^2b^5}}}



So {{{root(3,-8a^6b^15)=-2a^2b^5}}}