[tex]\displaystyle\bf\\3^{x}=8 \\\\\log_{3} 3^{x} =\log_{3} 8\\\\x\cdot \underbrace{\log_{3} 3}_{1}=\log_{3} 8\\\\x=\log_{3} 8\\\\Otvet \ : \ \Big[1 \ ; \ 3\Big)[/tex]
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[tex]\displaystyle\bf\\3^{x}=8 \\\\\log_{3} 3^{x} =\log_{3} 8\\\\x\cdot \underbrace{\log_{3} 3}_{1}=\log_{3} 8\\\\x=\log_{3} 8\\\\Otvet \ : \ \Big[1 \ ; \ 3\Big)[/tex]