document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=846162>Question 846162</A>: <I><SPAN STYLE=\"word-break: break-all;\"> log(sub5)(x+10)+log(sub5)(x-10)=3\r<BR>\n" );
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document.write( "solve for x. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #509635 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=509635\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  log(sub5)(x+10)+log(sub5)(x-10)=3<BR>\n" );
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document.write( "log5[(x+10)(x-10)] = 3<BR>\n" );
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document.write( "x^2-100 = 5^3 = 125<BR>\n" );
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document.write( "x^2 = 25<BR>\n" );
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document.write( "x = 5 or x = -5<BR>\n" );
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document.write( "Both are extraneous solutions<BR>\n" );
document.write( "because both values would make<BR>\n" );
document.write( "x-10 negative.  And you can't<BR>\n" );
document.write( "have the log of a negative.<BR>\n" );
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document.write( "Ans: No solution::<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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