document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=189652>Question 189652</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Simplify : identify x values that make expression undefined.\r<BR>\n" );
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document.write( "5.   3x^2-9x-12        over <BR>\n" );
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document.write( "     6x^2+9x+3\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #142321 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=142321\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if the value of x is such that it make the denominator zero this expression would be undefined. so set  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6x%5E2-9x%2B3=0 ALIGN=MIDDLE  ALT=\"6x%5E2-9x%2B3=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283x-3%29%282x-1%29=0 ALIGN=MIDDLE  ALT=\"%283x-3%29%282x-1%29=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "3x-3=0 and 2x-1=0<BR>\n" );
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document.write( "3x=3 and 2x=1<BR>\n" );
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document.write( "x=1 and x=1/2......so x cannot be these values or expression would be undefined </SPAN>\n" );
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