document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=474833>Question 474833</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all numbers for which the rational expression is undefined. <BR>\n" );
document.write( "(s^3-7s)/(s^2-81)<BR>\n" );
document.write( "The numbers for which the rational expression is undefined are___.<BR>\n" );
document.write( "(Use a comma to separate answers.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #325740 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=325740\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The expression is undefined when the denominator is zero and the numerator is nonzero (otherwise it is said to be \"indeterminate\").\r<BR>\n" );
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document.write( "We can set s^2 - 81 = 0, then s = 9 or -9. </SPAN>\n" );
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