document.write( "Question 332012: Solve: log base x (x+42)=2
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Algebra.Com's Answer #237962 by nerdybill(7384) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"log+%28x%2C%28x%2B42%29=2\"$
\n" ); document.write( " $\"x%2B42+=+x%5E2\"$
\n" ); document.write( " $\"0+=+x%5E2-x-42\"$
\n" ); document.write( "Factoring:
\n" ); document.write( " $\"0+=+%28x-7%29%28x%2B6%29\"$
\n" ); document.write( "x = {-6,7}
\n" ); document.write( "Toss out the -6 because it is an extraneous solution leaving:
\n" ); document.write( "x = 7 \n" ); document.write( "

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