document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=201276>Question 201276</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321499131/algebrahomeworkh>college algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> solve for x<BR>\n" );
document.write( "log 10^x + log 10^(x-15)=2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #151506 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=151506\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> taking the antilog ___ x (x-15) = 100\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "distributing and subtracting 100 ___ x^2 - 15x - 100 = 0\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "factoring ___ (x - 20) (x + 5) = 0\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "x - 20 = 0 ___ x = 20\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "x + 5 = 0 ___ x = -5\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "since logs are not defined for negative arguments (-5); x = 20 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );