document.write( "Question 690646: ln(2x+1) + ln(x-3)- 2 lnx = 0 \n" ); document.write( "

Algebra.Com's Answer #426362 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
ln(2x+1) + ln(x-3)- 2 lnx = 0
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\n" ); document.write( "ln[(2x+1)(x-3)/x^2] = 0
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\n" ); document.write( "(2x+1)(x-3)/x^2 = e^0
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\n" ); document.write( "(2x+1)(x-3)/x^2 = 1
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\n" ); document.write( "2x^2-5x-3 = x^2
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\n" ); document.write( "x^2 -5x -3 = 0
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\n" ); document.write( "x = [5 +- sqrt(25-4*-3)]/2
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\n" ); document.write( "x = [5 +- sqrt(37)]/2
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\n" ); document.write( "Positive solution:
\n" ); document.write( "x = (5/2) + (1/2)sqrt(37)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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