log3(2)-log9(12)= log3(2) -log3^2(12)= log3(2)-1/2* log3(12)= log3(2) - log3(√12) = log3(2/√12)= log3(√2/√6)= log3(1/√3)= log3(1/3^(1/2)) =1/2* log3(3^(-1))=-1/2
Пошаговое объяснение:
