document.write( "Question 393009: Please help in solving in this problem
\n" ); document.write( "Q) log(x+1)+log(x-1)=log 8 \n" ); document.write( "

Algebra.Com's Answer #278968 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
log(x+1)+log(x-1)=log 8
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\n" ); document.write( "log(x^2-1) = log(8)
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\n" ); document.write( "x^2-1 = 8
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\n" ); document.write( "x^2-9 = 0
\n" ); document.write( "(x-3)(x+3) = 0
\n" ); document.write( "Usable answer:
\n" ); document.write( "x = 3
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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