Question

simplest form of (2^3+4^3)^-1/9

Answer 1

\[(2^{3}+4^{3})^{\frac{ -1 }{ 9 }}\]

Answer 2

\(2^3=8,4^3=64,8+64=72\) is a start

Answer 3

I've done this over and over on my calculator and I cant get it

Answer 4

\[72^{-\frac{1}{9}}=\frac{1}{\sqrt[9]{72}}\]

Answer 5

if you want a decimal with a calculator, then try this
http://www.wolframalpha.com/input/?i=%282^3%2B4^3%29^-1%2F9