1)log1/3(x^2-5x+33)=-33 2)log3(z-2)+log3(x+6)=2 3)lg(x-1)+lg(x+1)=0 4)lg(3x-1)-lg(x+5)=lg5 5)log3(x^3-x)-log3x=log3(3) решить все и подробно ! иначе удаляю
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