Question 1012129
256^(1/6)
=16^2^(1/6)=16^(1/3)
={4^2}^1/3
=4^(2/3)
={2^2}^(2/3)
=2^(4/3)
=2^(3/3)*2^(1/3)
=2*2(1/3), which is what you want.