document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=208686>Question 208686</A>: <I><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( "p^3-5p<BR>\n" );
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document.write( "p^2-49<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 #157826 by </B><A HREF=/tutors/aboutme.mpl?userid=algebrapro18><B>algebrapro18(249)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=algebrapro18><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=157826\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Well a rational function is undefined only when its denominator equals to zero so to find where its undefined we will set the denominator equal to 0.\r<BR>\n" );
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document.write( "p^2-49=0\r<BR>\n" );
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document.write( "And now we solve this basic quadratic equation.  Start by adding 49 to both sides.\r<BR>\n" );
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document.write( "p^2-49+49=0+49<BR>\n" );
document.write( "p^2 = 49\r<BR>\n" );
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document.write( "Now we take the square root of both sides.\r<BR>\n" );
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document.write( "p = +/- 7\r<BR>\n" );
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document.write( "And thats your answer, the above rational function is undefined at -7 and 7\r<BR>\n" );
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