Ответ:2³ : 2⁶ = 23−6 = 2⁻³ = 1/8.(3⁻¹)⁻³ = 3(−1)(−3) = 3³ = 27.12⁻³ · 12⁻⁴ = 12⁻⁷ = 1/12⁷.(a⁻⁵)⁴ · a²² = a⁻²⁰ · a²² = a² = a².