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№3 n⁵/⁶ : n ¹/¹²⁺¹/⁴ = n⁵/⁶ : n¹/³ = n⁵/⁶-¹/³ = n¹/²= 64¹/² = √64=8 №2 a¹⁰.⁵⁷: a⁸.⁵⁷ = a²= 10²=100 №1 (11a⁶b³-9a⁶b³) : 4a⁶b⁶ = 2a⁶b³ : 4a⁶b⁶ = b³ : 2b⁶= 1/2 * b⁻³ = 1/2b³ = 1/(2*3³) = 1/ 2*27 = 1/54