Dear Colleagues,

I've noticed through the years that many students had

considerable difficulty simplifying the expression below

on a test in Intermediate Algebra:

[ (6 r^8 t) /(-3 r^2) ]^3

I'm interested in seeing how you think students should

approach this problem, and detailed steps they should

take, along with precise assumptions/formulas they

should know and be able to apply correctly at each step.

Thank you in advance.

John Lee