Which radical expression is equivalent to x 1/8

Answer:
B
Step-by-step explanation:
using the rule of exponents
[tex]x^{\frac{a}{b} }[/tex] = [tex]\sqrt[b]{x^{a} }[/tex]
then
[tex]x^{\frac{1}{8} }[/tex] ( with a = 1 , b = 8 )
= [tex]\sqrt[8]{x}[/tex]