SOLUTION: ln(x+4)-ln(x+1)=lnx

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Question 79875: ln(x+4)-ln(x+1)=lnx
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
ln%28e%2Cx+%2B+4%29+-+log%28e%2Cx+%2B+1%29+=+log%28e%2Cx%29
ln%28e%2C%28x+%2B+4%29%2F%28x+%2B+1%29%29+=+log%28e%2Cx%29
%28x+%2B+4%29%2F%28x+%2B+1%29+=+x
x+%2B+4+=+x%28x+%2B+1%29
x+%2B+4+=+x%5E2+%2B+x
0+=+x%5E2+-+4
0+=+%28x+-+2%29%28x+%2B+2%29
x = 2 and x = -2
You can not take the log of a negative number. Answer: x = 2