document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=366154>Question 366154</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need to solve the following equation rounded to 3 decimal places:\r<BR>\n" );
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document.write( "I need to see how it's done, so i can practice\r<BR>\n" );
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document.write( "ln x + ln (x+7) = -5\r<BR>\n" );
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document.write( "Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #260927 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=260927\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ln x + ln (x+7) = -5 <BR>\n" );
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document.write( "Since ln(A) + ln(B) = ln(AB)<BR>\n" );
document.write( "you get:<BR>\n" );
document.write( "ln[x(x+7)] = -5<BR>\n" );
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document.write( "That means \"the exponent of \"e\" that gives you<BR>\n" );
document.write( "x^2+7x is -5\"<BR>\n" );
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document.write( "Solve x^2+7x = e^-5<BR>\n" );
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document.write( "x^2 + 7x = 0.0067<BR>\n" );
document.write( "x^2 + 7x - 0.0067 = 0 <BR>\n" );
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document.write( "Positive solution:<BR>\n" );
document.write( "I graphed the equation and found zeroes at<BR>\n" );
document.write( "x = 9.57x10^-4<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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