Question 30507
But it is!

{{{(-8)^(1/3) = -2}}} and if you were to cube both sides:
{{{((-8)^(1/3))^3 = (-2)^3}}} = {{{-8}}}

On both the TI-86 and the TI-89 Titanium, I get:
{{{(-8)^(1/3) = -2}}}