document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=430748>Question 430748</A>: <I><SPAN STYLE=\"word-break: break-all;\"> log(d)+log(2d+1)=log(7d)\r<BR>\n" );
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document.write( "please help!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #299080 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=299080\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> log(d)+log(2d+1)=log(7d) <BR>\n" );
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document.write( "log[d(2d+1)] = log(7d)<BR>\n" );
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document.write( "log[2d^2+d] = log(7d)<BR>\n" );
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document.write( "2d^2+d = 7d<BR>\n" );
document.write( "2d^2-6d = 0<BR>\n" );
document.write( "2d(d-3) = 0<BR>\n" );
document.write( "d = 0 or d = 3<BR>\n" );
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document.write( "d=0 cannot be a solution because log(0) does not exist.<BR>\n" );
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document.write( "So d = 3 is the only solution.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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