document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=438229>Question 438229</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( "(n^3-8n)/(n^2-4) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #303097 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=303097\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It would only be undefined if the denominator is zero.<BR>\n" );
document.write( "so, to find the values, we set (n^2-4) to zero and solve for n:<BR>\n" );
document.write( "(n^2-4) = 0<BR>\n" );
document.write( "n^2 = 4<BR>\n" );
document.write( "n = sqrt(4)<BR>\n" );
document.write( "n = {-2, 2} (THE ANSWER)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );