document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=141096>Question 141096</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve for x <BR>\n" );
document.write( "log2x + log2(x^2-9) = log2(-5x) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #102785 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=102785\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> adding logs is multiplying quantities\r<BR>\n" );
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document.write( "taking antilog __ x(x^2-9)=-5x __ x^3-9x=-5x __ x^3-4x=0 __ x(x^2-4)=0 __ x(x+2)(x-2)=0\r<BR>\n" );
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document.write( "x=0\r<BR>\n" );
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document.write( "x+2=0 __ x=-2\r<BR>\n" );
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document.write( "x-2=0 __ x=2\r<BR>\n" );
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document.write( "logarthms are NOT defined for quantities <=0<BR>\n" );
document.write( "__ the algebra generates the \"solutions\" __ but the logs aren't realistic </SPAN>\n" );
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