document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=739440>Question 739440</A>: <I><SPAN STYLE=\"word-break: break-all;\"> f(x)=x+2<BR>\n" );
document.write( "g(x)=x^2-9<BR>\n" );
document.write( "May you help me?<BR>\n" );
document.write( "I need to find g[f(x)] </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #451118 by </B><A HREF=/tutors/aboutme.mpl?userid=Leaf+W.><B>Leaf W.(135)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Leaf+W.><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=Leaf+W.><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=451118\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> g[f(x)] means that you need to find g(x) while replacing the \"x\" with f(x).<BR>\n" );
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document.write( "Therefore, if f(x) = x + 2 and g(x) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2 ALIGN=MIDDLE  ALT=\"x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > - 9, then g[f(x)] would be inserting the f(x) expression into g(x) for x => g[f(x)] = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x+%2B+2%29%5E2+-+9 ALIGN=MIDDLE  ALT=\"%28x+%2B+2%29%5E2+-+9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "FOIL: g[f(x)] = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+%2B+4x+%2B+4+-+9 ALIGN=MIDDLE  ALT=\"x%5E2+%2B+4x+%2B+4+-+9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Simplify: g[f(x)] = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+%2B+4x+-+5 ALIGN=MIDDLE  ALT=\"x%5E2+%2B+4x+-+5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Therefore, your final answer is g[f(x)] = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+%2B+4x+-+5 ALIGN=MIDDLE  ALT=\"x%5E2+%2B+4x+-+5\"   DISABLED_style= \"max-width:90%; height:auto;\" >. If your teacher wants you to factor, it is g[f(x)] = (x + 5)(x - 1). </SPAN>\n" );
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