SOLUTION: Solve the logarithmic equation. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) ln x + ln (x-4) = ln 117

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Question 891530: Solve the logarithmic equation. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)
ln x + ln (x-4) = ln 117
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39623)   (Show Source): You can put this solution on YOUR website!
Answer by MathTherapy(10555)   (Show Source): You can put this solution on YOUR website!

Solve the logarithmic equation. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)
ln x + ln (x-4) = ln 117


ln x + ln (x - 4) = ln 117

x(x - 4) = 117



(x - 13)(x + 9) = 0

                 or                  x = - 9 (ignore, as this is an EXTRANEOUS solution) 

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