Respuesta :

Answer:

[tex]a^{-\frac{2}{3}}[/tex]

Step-by-step explanation:

[tex]\bigg (a^{\frac{2}{3}}\bigg)^{-1} =\frac{1}{a^{\frac{2}{3}}}} =\huge{\boxed{a^{-\frac{2}{3}}}[/tex]