document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=674579>Question 674579</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all numbers for which each rational expression is undefined. If expression is defined for all real numbers, state so.\r<BR>\n" );
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document.write( "1)  8         <BR>\n" );
document.write( "  _____         <BR>\n" );
document.write( "  x^2+4\r<BR>\n" );
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document.write( "2)  7x-14<BR>\n" );
document.write( "   _________<BR>\n" );
document.write( "   x^2-9x+20\r<BR>\n" );
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document.write( "3)  x+5<BR>\n" );
document.write( "  _________<BR>\n" );
document.write( " (x+7) (x-9)           </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #419737 by </B><A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><B>ReadingBoosters(3246)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><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=419737\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The expressions will be undefined where 0 is the denominator<BR>\n" );
document.write( "...<BR>\n" );
document.write( "1)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+%2B+4+=+0 ALIGN=MIDDLE  ALT=\"x%5E2+%2B+4+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+=+-4 ALIGN=MIDDLE  ALT=\"x%5E2+=+-4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28x%5E2%29 ALIGN=MIDDLE  ALT=\"sqrt%28x%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = +/- <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28-4%29 ALIGN=MIDDLE  ALT=\"sqrt%28-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = +/- <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%284%2A-1%29 ALIGN=MIDDLE  ALT=\"sqrt%284%2A-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = +/- 2i<BR>\n" );
document.write( "...<BR>\n" );
document.write( "2)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-9x%2B20+=+0 ALIGN=MIDDLE  ALT=\"x%5E2-9x%2B20+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-5%29%28x-4%29+=+0 ALIGN=MIDDLE  ALT=\"%28x-5%29%28x-4%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = 5 and 4<BR>\n" );
document.write( "...<BR>\n" );
document.write( "3)<BR>\n" );
document.write( "(x-7)(x-9)=0<BR>\n" );
document.write( "x = 7 and 9<BR>\n" );
document.write( ".....................<BR>\n" );
document.write( "Delighted to help.<BR>\n" );
document.write( "-Reading Boosters<BR>\n" );
document.write( "Website: www.MyHomeworkAnswers.com<BR>\n" );
document.write( "Wanting for others what we want for ourselves. </SPAN>\n" );
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