[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}}
\\\\
-------------------------------\\\\
\cfrac{x^6-x^5+x^4}{x^2}\implies \stackrel{\textit{distributing the denominator}}{\cfrac{x^6}{x^2}-\cfrac{x^5}{x^2}+\cfrac{x^4}{x^2}}
\\\\\\
x^6x^{-2}-x^5x^{-2}+x^4x^{-2}\implies x^{6-2}-x^{5-2}+x^{4-2}\implies x^4-x^3+x^2[/tex]
