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27 December, 05:29

Solve the exponential equation. express the solution set in terms of natural logarithms 5^*+7=2

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  1. 27 December, 08:39
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    5^ (x+7) = 2

    the known number is in the exponent, so use log to solve

    Log both sides: log5^ (x+7) = log2

    (x+7) log5=log2

    x+7=log2/log5

    x=log2/log5 - 7

    the result needs to be logarithms, so the above is your final answer
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