document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=646070>Question 646070</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the following logarithmic equation. log(base5)(x+15)+log(base5)(x+134)=4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #406932 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=406932\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve the following logarithmic equation.<BR>\n" );
document.write( "log(base5)(x+15)+log(base5)(x+134)=4<BR>\n" );
document.write( "place under single log<BR>\n" );
document.write( "log5[(x+15)(x+134)]=4<BR>\n" );
document.write( "convert to exponential form<BR>\n" );
document.write( "5^4=(x+15)(x+134)<BR>\n" );
document.write( "625=x^2+149x+2010<BR>\n" );
document.write( "x^2+149x+1385=0<BR>\n" );
document.write( "solve for x by following quadratic formula:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "a=1, b=149, c=1385<BR>\n" );
document.write( "ans:<BR>\n" );
document.write( "x&#8776;-139.039 (reject,(x+15)>0)<BR>\n" );
document.write( "or <BR>\n" );
document.write( "x&#8776;-9.961<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );