Write (27a^-6)^-2/3 in simplest form.
let be A = (27a^- 6)^-2/3= (27a^- 6)^- 2/3=(27)^- 2/3 )(a^- 6)^- 2/3=(a^4) /(27)^2/3, but 27 = 3^3, so (27)^2/3= (3^3)^2/3=3^2=9finally A= (a^4) /9