document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=261055>Question 261055</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all numbers for which the rational expression is undefined.\r<BR>\n" );
document.write( "\n" );
document.write( "  9/x-5\r<BR>\n" );
document.write( "\n" );
document.write( "Now the instructions for this problem say that I should set the denominator to 0 and solve for x, but what about the 9?\r<BR>\n" );
document.write( "\n" );
document.write( "The answer that I came up with is 0, but I am not sure if it is correct.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #192323 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=192323\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find all numbers for which the rational expression is undefined.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F%28x-5%29 ALIGN=MIDDLE  ALT=\"9%2F%28x-5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "An expression is undefined when the denominator = 0, therefore<BR>\n" );
document.write( "Find x<BR>\n" );
document.write( "x - 5 = 0<BR>\n" );
document.write( "add 5 to both sides<BR>\n" );
document.write( "x = +5<BR>\n" );
document.write( ":<BR>\n" );
document.write( "You can see when you substitute 5 for x in the original expression<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F%285-5%29 ALIGN=MIDDLE  ALT=\"9%2F%285-5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F0 ALIGN=MIDDLE  ALT=\"9%2F0\"   DISABLED_style= \"max-width:90%; height:auto;\" >, undefined <BR>\n" );
document.write( ":<BR>\n" );
document.write( "We don't care about the 9\r<BR>\n" );
document.write( "\n" );
document.write( "Response to your comment.  No, the answer is x = 5, that in turn makes the denominator 0 (5 - 5), did the get this? </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );