document.write( "Question 881262: $\"+log+%2821%2C+%28x%2B84%29+%29+=+3-log+%2821%2Cx%29+\"$ \n" ); document.write( "

Algebra.Com's Answer #532089 by lwsshak3(11628) $\"\"$ $\"About$

You can put this solution on YOUR website!
Solve for x:
\n" ); document.write( " $\"+log+%2821%2C+%28x%2B84%29+%29+=+3-log+%2821%2Cx%29+\"$
\n" ); document.write( " $\"+log+%2821%2C+%28x%2B84%29+%29%2Blog+%2821%2Cx%29+=+3+\"$
\n" ); document.write( " $\"+log+%2821%2C+%28x%2B84%29%28x%29%29+=+3+\"$
\n" ); document.write( "21^3=x^2+84x
\n" ); document.write( "x^2+84x-9261=0
\n" ); document.write( "(x+147)(x-63)=0
\n" ); document.write( "x=-147 (reject, (x+84)>0)
\n" ); document.write( "or
\n" ); document.write( "x=63 \n" ); document.write( "

\n" );