document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=359031>Question 359031</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me\r<BR>\n" );
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document.write( "Find all numbers for which the rational expression is undefined.\r<BR>\n" );
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document.write( "m^3-7m  /  m^2-81\r<BR>\n" );
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document.write( "\"use 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 #256203 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=256203\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find all numbers for which the rational expression is undefined. \r<BR>\n" );
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document.write( "m^3-7m / m^2-81<BR>\n" );
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document.write( "The denominator cannot be zero.<BR>\n" );
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document.write( "Solve m^2-81 = 0<BR>\n" );
document.write( "(m-9)(m+9) = 0<BR>\n" );
document.write( "m = 9 or m = -9<BR>\n" );
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document.write( "The expression is undefined for m = 9 and for m = -9.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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