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Nilai x yang memenuhi 8 x + 1 = 2 4 x − 1 adalah...

Nilai x yang memenuhi  adalah...

  1. 1 plus 6 log presubscript space presuperscript 2 3

  2. 1 plus 4 log presubscript space presuperscript 2 space 3

  3. 1 plus 6 log presubscript space presuperscript 3 space 2

  4. 1 minus 4 log presubscript space presuperscript 3 space 2

  5. 1 minus 6 log presubscript space presuperscript 3 space 2

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Pembahasan

8 to the power of x plus 1 end exponent equals 24 to the power of x minus 1 end exponent 8 to the power of x.8 equals 24 to the power of x over 24 8 to the power of x.8 equals 1 over 24.8 to the power of x.3 to the power of x 3 to the power of x equals 8 cross times 24 x equals log presubscript space presuperscript 3 open parentheses 8 cross times 24 close parentheses x equals log presubscript space presuperscript 3 open parentheses 8 cross times 8 cross times 3 close parentheses x equals log presubscript space presuperscript 3 8 plus log presubscript space presuperscript 3 8 plus log presubscript space presuperscript 3 3 x equals 2. log presubscript space presuperscript 3 8 plus 1 x equals 2. log presubscript space presuperscript 3 2 cubed plus 1 x equals 6. log presubscript space presuperscript 3 2 plus 1

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