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December 20, 2014

December 20, 2014

Posted by **Kyle** on Wednesday, October 30, 2013 at 10:40pm.

ln x + ln(x+1)=1

ln(x+5) = ln(x-1) - ln(x+1)

- Algebra -
**Steve**, Thursday, October 31, 2013 at 5:11amput to work the properties of logs.

ln x + ln(x+1) = 1

ln(x(x+1)) = 1

x(x+1) = e

x^2 + x - e = 0

then use the quadratic formula

ln(x+5) = ln(x-1)/ln(x+1)

ln(x+5) = ln((x-1)/(x+1))

x+5 = (x-1)/(x+1)

x^2+6x+5 = x-1

x^2+5x+6 = 0

...

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