A⁶(a⁻³)³ = a⁶ * a⁻³*³ = a⁶ *a⁻⁹ = a⁶⁺⁽⁻⁹⁾= a⁻³ при а = 1/8 (1/8)⁻³ = (1/8) ⁻³ = (1/8¹)⁻³=(8⁻¹)⁻³ = 8⁻¹*⁽⁻³⁾ = 8³= 512