Respuesta :

choixongdong

(27a^-3)^-2/3

=(3^3 a^-3)^-2/3

= 3^(3 *(-2/3) a^(-3 * (-2/3))

= 3^-2 a^2

= a^2/3^2

=a^2/9

Answer

a) a^2/9