5) д) (a⁻¹/(b³c⁻²))³;

(a⁻¹/(b³c⁻²))³ = (a⁻¹)³ / (b³c⁻²)³ = a⁻³ / (b³ )³(c⁻²)³ = a⁻³ / (b⁹c⁻⁶).

a⁻³ / (b⁹c⁻⁶) = a⁻³c⁶ / b⁹.

a⁻³c⁶ / b⁹ = c⁶ / (a³b⁹).