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12 July, 13:17

Logx + log (3x-13) = 1

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  1. 12 July, 15:48
    0
    X = 5

    Condense the left side.

    log x (3x-13) = 1

    Put a base 10 on each side to clear the log.

    x (3x-13) = 10

    3x^2-13x-10=0

    Factoring you get x=5 and x=-2/3. The domain for log is x>0 so the - 2/3 is an extraneous solution.
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