document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=546501>Question 546501</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the domain of a rational function when the denominator cannot be zero.i.e, (x^3+1)/(x^2+2x) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #356031 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=356031\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">     what is the domain of a rational function when the denominator cannot be zero.i.e, (x^3+1)/(x^2+2x)<BR>\n" );
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document.write( "Find values that would make the denominator zero:<BR>\n" );
document.write( "x^2+2x = 0<BR>\n" );
document.write( "x(x+2) = 0<BR>\n" );
document.write( "x = {-2, 0} (values that x can't take)<BR>\n" );
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document.write( "Therefore, the domain is ALL numbers except {-2, 0}<BR>\n" );
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document.write( "You can specify this by:<BR>\n" );
document.write( "(-oo, -2) U (-2, 0) U (0, +oo)<BR>\n" );
document.write( "where<BR>\n" );
document.write( "oo represents infinity<BR>\n" );
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