Answer:
D. [tex] \dfrac{m^2}{n} [/tex]
Step-by-step explanation:
I assume this is your problem:
[tex] (m^8n^{-4})^{\frac{1}{4}} [/tex]
If so, then this is the solution.
[tex] (m^8n^{-4})^{\frac{1}{4}} = [/tex]
[tex] = m^{8 \times \frac{1}{4}} n^{-4 \times \frac{1}{4}} [/tex]
[tex] = m^2 n^{-1} [/tex]
[tex] = \dfrac{m^2}{n} [/tex]
