document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=619317>Question 619317</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the logarithmic equation: log(x+1)+log(x-1)=log3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #389563 by </B><A HREF=/tutors/aboutme.mpl?userid=sophxmai><B>sophxmai(62)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sophxmai><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=sophxmai><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=389563\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Using the rule loga+logb=logab\r<BR>\n" );
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document.write( "log(x+1)+log(x-1)=log3<BR>\n" );
document.write( "log[(x+1)*(x-1)]=log3<BR>\n" );
document.write( "log(x^2-x+x-1)=log3<BR>\n" );
document.write( "log(x^2-1)=log3<BR>\n" );
document.write( "10^[log(x^2-1)]=10^log3<BR>\n" );
document.write( "x^2-1=3<BR>\n" );
document.write( "x^2=4<BR>\n" );
document.write( "x=sqrt4<BR>\n" );
document.write( "x=+2,-2 </SPAN>\n" );
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