document.write( "Question 890920: Please help me solve this equation.\r
\n" ); document.write( "\n" ); document.write( "Round to the nearest thousandth.\r
\n" ); document.write( "\n" ); document.write( "2 ln(y+1) = ln(y^2 - 1) + ln 5 \n" ); document.write( "

Algebra.Com's Answer #539395 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"2%2Aln%28y%2B1%29+=+ln%285%28y%5E2+-+1%29%29\"$
\n" ); document.write( " $\"ln%28%28y%2B1%29%5E2%29+=+ln%285%28y%5E2+-+1%29%29\"$
\n" ); document.write( " $\"%28y%2B1%29%5E2=5%28y%5E2-1%29\"$
\n" ); document.write( " $\"y%5E2%2B2y%2B1=5y%5E2-5\"$
\n" ); document.write( " $\"4y%5E2-2y-6=0\"$
\n" ); document.write( " $\"2y%5E2-y-3=0\"$
\n" ); document.write( " $\"%28y%2B1%29%282y-3%29=0\"$
\n" ); document.write( "Two possible solutions:
\n" ); document.write( " $\"y%2B1=0\"$
\n" ); document.write( " $\"y=-1\"$
\n" ); document.write( "Not allowed since $\"ln%280%29\"$ is not defined.
\n" ); document.write( " $\"2y-3=0\"$
\n" ); document.write( " $\"2y=3\"$
\n" ); document.write( " $\"highlight%28y=3%2F2%29\"$
\n" ); document.write( " \n" ); document.write( "

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