document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=145014>Question 145014</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all number for which the rational expression is not defined:\r<BR>\n" );
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document.write( "(d-2)/(7-d)\r<BR>\n" );
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document.write( "This is as far as I have gotten however I do not think I am going about this problem correctly. Please help.\r<BR>\n" );
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document.write( "= (d-2)/(-d+7)<BR>\n" );
document.write( "= -d^2+2d+7d-14<BR>\n" );
document.write( "= -d^2+9d-14<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 #105718 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=105718\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The only way for this rational expression to be undefined is for the denominator to be 0.  What value(s) of the variable <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d ALIGN=MIDDLE  ALT=\"d\"   DISABLED_style= \"max-width:90%; height:auto;\" > make the denominator be equal to 0?  That's your answer. </SPAN>\n" );
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