document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1158949>Question 1158949</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all values of the variable x for which the rational expression is undefined.\r<BR>\n" );
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document.write( "4x+15<BR>\n" );
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document.write( "x^2+1x-20\r<BR>\n" );
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document.write( "The expression is undefined when x =  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #781927 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=781927\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284x%2B15%29%2F%28x%5E2%2Bx-20%29 ALIGN=MIDDLE  ALT=\"%284x%2B15%29%2F%28x%5E2%2Bx-20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284x%2B15%29%2F%28%28x-4%29%28x%2B5%29%29 ALIGN=MIDDLE  ALT=\"%284x%2B15%29%2F%28%28x-4%29%28x%2B5%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >--------------undefined at 4, and at -5. </SPAN>\n" );
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