document.write( "Question 857787: log x^2=y+3
\n" ); document.write( "log x=y-1\r
\n" ); document.write( "\n" ); document.write( "solve the system \n" ); document.write( "

Algebra.Com's Answer #516836 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"log+x%5E2=y%2B3\"$
\n" ); document.write( " $\"2%2Alog%28x%29=y%2B3\"$
\n" ); document.write( "Let $\"u=log%28x%29\"$
\n" ); document.write( "1. $\"2%2Au=y%2B3\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"u=y-1\"$
\n" ); document.write( "Substitute into eq. 1,
\n" ); document.write( " $\"2%28y-1%29=y%2B3\"$
\n" ); document.write( " $\"2y-2=y%2B3\"$
\n" ); document.write( " $\"y=5\"$
\n" ); document.write( "Now go back,
\n" ); document.write( " $\"u=y-1\"$
\n" ); document.write( " $\"u=5-1\"$
\n" ); document.write( " $\"u=4\"$
\n" ); document.write( " $\"u=log%28x%29\"$
\n" ); document.write( " $\"log%28x%29=4\"$
\n" ); document.write( " $\"x=10000\"$
\n" ); document.write( " \n" ); document.write( "

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