how to solve log equations?

how to solve,

lnx + ln(x^2+4) = 10

1 Answer

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  • 1 decade ago
    Favorite Answer

    When you add logs you can multiply the insides

    Step 1.

    ln( (x)(x^2 +4) = 10

    then you can take each of these to the e.

    e^(ln( (x)(x^2 +4)) = e^10

    e^ln = 1

    Therefore

    x(x^2 + 4) = e^10

    Therefore

    x = e^10 and

    x = sqrt( e^10 - 4)

    Source(s): bs chem engr
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