document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=35505>Question 35505</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0534432956/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Let f(x) = 2x + 1 and g(x) = x^2 - 4 and find the following:\r<BR>\n" );
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document.write( "(fg)(x)\r<BR>\n" );
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document.write( "(g of 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 #21655 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=21655\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The first is just multiplication!\r<BR>\n" );
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document.write( "(fg)(x) = f(x) * g(x) = (2x+1)*(x^2-4)\r<BR>\n" );
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document.write( "The second is subsitution:<BR>\n" );
document.write( "(g of f)(x)\r<BR>\n" );
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document.write( "First, <BR>\n" );
document.write( "g(x) = x^2 - 4<BR>\n" );
document.write( "g(SUB) = (SUB)^2 - 4<BR>\n" );
document.write( "g(_____) = (_____)^2 - 4<BR>\n" );
document.write( "g( f(x) ) = ( 2x+1)^2 - 4 <BR>\n" );
document.write( "g( f(x) ) = 4x^2 + 4x + 1 - 4 = 4x^2 + 4x -3\r<BR>\n" );
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document.write( "R^2 at SCC\r<BR>\n" );
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document.write( " </SPAN>\n" );
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