document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=817077>Question 817077</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you simplify and then find the domain for the rational function:\r<BR>\n" );
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document.write( "(9x^2-36)/(x+2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #491875 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=491875\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Careful!  If you simplify the expression, then that is a different function.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28x%29=%289x%5E2-36%29%2F%28x%2B2%29 ALIGN=MIDDLE  ALT=\"r%28x%29=%289x%5E2-36%29%2F%28x%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%289x%5E2-36%29%2F%28x%2B2%29 ALIGN=MIDDLE  ALT=\"%289x%5E2-36%29%2F%28x%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%289%2A%28x%5E2-4%29%29%2F%28x%2B2%29 ALIGN=MIDDLE  ALT=\"%289%2A%28x%5E2-4%29%29%2F%28x%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28x%29=9%28%28x%2B2%29%28x-2%29%29%2F%28x%2B2%29 ALIGN=MIDDLE  ALT=\"r%28x%29=9%28%28x%2B2%29%28x-2%29%29%2F%28x%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "As simplifed,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29=9%28x-2%29 ALIGN=MIDDLE  ALT=\"f%28x%29=9%28x-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "r(x) and f(x) are different functions.<BR>\n" );
document.write( "One is rational and the other is a line.<BR>\n" );
document.write( "r(x) is undefined at <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-2 ALIGN=MIDDLE  ALT=\"x=-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
document.write( "the domain for r(x) is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%3C-2 ALIGN=MIDDLE  ALT=\"x%3C-2\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%3E-2 ALIGN=MIDDLE  ALT=\"x%3E-2\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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