document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=4498>Question 4498</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Let  f(x)=x^2+x and g(x)=2x+1.  Find and simplify the following:<BR>\n" );
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document.write( "a)    (g o f)(x)<BR>\n" );
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document.write( "b)    (f o g)(x)      -- the o is colored in.<BR>\n" );
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document.write( "c)    (f+g)(2)<BR>\n" );
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document.write( "d)    (f-g)(3)\r<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 #2045 by </B><A HREF=/tutors/aboutme.mpl?userid=pushpaharan><B>pushpaharan(47)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=pushpaharan><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=2045\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x)=x^2+x and g(x)=2x+1<BR>\n" );
document.write( "a)    (g o f)(x) = 2(x^2+x)+1 = 2x^2+2x+1<BR>\n" );
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document.write( "b)    (f o g)(x)= (2x+1)^2 + 2x+1 = 4x^2+4x+1 + 2x+1 = 4x^2+6x+2<BR>\n" );
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document.write( "c)    (f+g)(2) = x^2+x +2x+1 = x^2 + 3x+1 = 2^2+ 3*2+1 =11<BR>\n" );
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document.write( "d)    (f-g)(3) = x^2+x -2x-1 = x^2 -x-1 = 3^2-3-1= 5 </SPAN>\n" );
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