document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=480762>Question 480762</A>: <I><SPAN STYLE=\"word-break: break-all;\"> f(x)=x^2+1 find for f(x+2)<BR>\n" );
document.write( "f(x+2)=(x+2)^2 +1<BR>\n" );
document.write( "      =x^2+4+1<BR>\n" );
document.write( "      =x^2 +5\r<BR>\n" );
document.write( "\n" );
document.write( "But book answer is: f(x+2)=x^2+4x=5<BR>\n" );
document.write( "I can not figure out where you get the 4x- what step am I missing? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #329216 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=329216\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You have to apply FOIL<BR>\n" );
document.write( ".<BR>\n" );
document.write( "f(x)=x^2+1 find for f(x+2)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "f(x+2)=(x+2)^2+1<BR>\n" );
document.write( "f(x+2)=(x+2)(x+2)+1<BR>\n" );
document.write( "f(x+2)=(x^2+2x+2x+4)+1<BR>\n" );
document.write( "f(x+2)=(x^2+4x+4)+1<BR>\n" );
document.write( "f(x+2)= x^2+4x+5<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );