document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=131513>Question 131513</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi the section im working on is natural logs Im confused on this problem.\r<BR>\n" );
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document.write( "Use the properties of logarithms to simplify each question and solve it. Round to the nearest hundredth. <BR>\n" );
document.write( "ln(x+2)+ln(x-2)=0\r<BR>\n" );
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document.write( "thanks :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #95991 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=95991\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ln(x+2)+ln(x-2)=0 <BR>\n" );
document.write( "ln[(x+2)(x-2)] = 0<BR>\n" );
document.write( "ln[x^2-4] = 0<BR>\n" );
document.write( "x^2-4 = e^0<BR>\n" );
document.write( "x^2-4 = 1<BR>\n" );
document.write( "x^2 = 5<BR>\n" );
document.write( "x = sqrt5 or x = -sqrt(5)<BR>\n" );
document.write( "Only x = sqrt5 is an acceptable answer<BR>\n" );
document.write( "because -sqrt(5)-2 is negative and ln(negative) does not exist.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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