Answer:
[tex]\frac{1}{\sqrt[n]{64}}[/tex]
Step-by-step explanation:
[tex]\frac{1}{\sqrt[1]{64}} =\frac{1}{64}[/tex]
[tex]\frac{1}{\sqrt[2]{64}} =\frac{1}{16}[/tex]
[tex]\frac{1}{\sqrt[3]{64}} =\frac{1}{4}[/tex]
[tex]\frac{1}{\sqrt[4]{64}} =\frac{1}{1}[/tex]