The Answer Is N=1/4
[tex]8^{ \frac{1}{3} } = 2[/tex]
Meaning,
[tex] {8}^{ \frac{1}{3} } \times {8}^{ \frac{1}{3} } = 4[/tex]
[tex] \sqrt[n]{256} = 4[/tex]
Meaning, n=1/4 because this equals 4.