document.write( "Question 739571: ln(x + 8) – ln(x – 4) = ln x
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Algebra.Com's Answer #451271 by lwsshak3(11628) $\"\"$ $\"About$

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ln(x + 8) – ln(x – 4) = ln x
\n" ); document.write( "ln[(x+8)/(x-4)]=ln(x)
\n" ); document.write( "(x+8)/(x-4)=x
\n" ); document.write( "x^2-4x=x+8
\n" ); document.write( "x^2-5x-8=0
\n" ); document.write( "solve for x by quadratic formula:
\n" ); document.write( "x≈-1.275(reject,(x-4)>0)
\n" ); document.write( "or
\n" ); document.write( "x≈6.275
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