[tex]\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad
a^n\implies \cfrac{1}{a^{-n}}
\\\\\\
\textit{}a^{\frac{ n}{ m}} \implies \sqrt[ m]{a^ n}
\qquad \qquad
\sqrt[ m]{a^ n}\implies a^{\frac{ n}{ m}}
\\\\
-------------------------------[/tex]
[tex]\bf \cfrac{x^{\frac{5}{8}}}{x^{\frac{1}{8}}}\implies x^{\frac{5}{8}}\cdot x^{-\frac{1}{8}}\implies x^{\frac{5}{8}-\frac{1}{8}}\implies x^{\frac{4}{8}}\implies x^{\frac{1}{2}}\implies \sqrt[2]{x^1}\implies \sqrt{x}[/tex]