3log 81+3logv/3-4.3log1/9

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3log 81+3logv/3-4.3log1/9

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³log81 + ³log√3 – 4³log1/9

= ³log3⁴ + ³log3¹/² – 4³log3⁻²

= ³log (3⁴ x 3¹/² ) – ³log3⁻⁸

= ³log (3⁴ x 3¹/²) / 3⁻⁸

= ³log 3¹² ¹/²

= 12,5 ³log3

= 12,5