document.write( "Question 77283: The value of x in the equation log (x-1)9=2 is
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Algebra.Com's Answer #55386 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
log (x-1)9=2 \r
\n" ); document.write( "\n" ); document.write( "In exponential form this can be written as follows:\r
\n" ); document.write( "\n" ); document.write( "(x-1)^2 = 9\r
\n" ); document.write( "\n" ); document.write( "(x-1)^2-9 = 0
\n" ); document.write( "Factor to get:
\n" ); document.write( "(x-1)-3 = 0 or (x-1)+3=0
\n" ); document.write( "x=4 = x=-2
\n" ); document.write( "But x cannot be -2 because the base of the log must
\n" ); document.write( "be greater than zero.
\n" ); document.write( "So, only solution is x=4\r
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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