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Math Help - please help me to solve this.....

  1. #1
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    please help me to solve this.....

    solve the equation 1n x + 1n(X+2) =1...thank u
    Last edited by sharmala; September 28th 2012 at 08:39 PM.
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  2. #2
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    Re: please help me to solve this.....

    Hey sharmala.

    Is Inx meant to be ln(x) where ln is the natural logarithm?
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  3. #3
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    Re: please help me to solve this.....

    yes....
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  4. #4
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    Re: please help me to solve this.....

    Well here is the main hint: ln(x) + ln(y) = ln(x*y).
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  5. #5
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    Re: please help me to solve this.....

    i tried but the answer is incorrect
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  6. #6
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    Re: please help me to solve this.....

    Show us what you tried.
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  7. #7
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    Re: please help me to solve this.....

    ln(x)+ln(x+2) = ln(x*(x+2))
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  8. #8
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    Re: please help me to solve this.....

    You then need to clear it of the logarithm, by taking the exponential of both sides of the equation.

    e^[ln(x*(x+2))] = e^1
    x^2 + 2x = e^1
    x^2 + 2x - e^1 = 0

    And then solve using the quadratic formula.
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