document.write( "Question 271046: Evaluate the logarithm:\r
\n" ); document.write( "\n" ); document.write( "log9 1/81 \n" ); document.write( "

Algebra.Com's Answer #198471 by Earlsdon(6294) $\"\"$ $\"About$

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Evaluate:
\n" ); document.write( " $\"Log%5B9%5D%281%2F81%29+=+x\"$ Rewrite in exponential form:
\n" ); document.write( " $\"9%5Ex+=+1%2F81\"$ Substitute $\"1%2F81+=+1%2F9%5E2\"$ = $\"9%5E%28-2%29\"$
\n" ); document.write( " $\"9%5Ex+=+9%5E%28-2%29\"$ The bases are equal so the exponents are equal.
\n" ); document.write( " $\"highlight%28x+=+-2%29\"$ \n" ); document.write( "

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