document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1002750>Question 1002750</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Did I answer these correctly?<BR>\n" );
document.write( "4)f(x) = 2x + 3<BR>\n" );
document.write( "g(x)= 2x^2 + 2x <BR>\n" );
document.write( "Find f(g(x) )<BR>\n" );
document.write( "2(2x^2+2x)+3<BR>\n" );
document.write( "=4x(x+1)+3<BR>\n" );
document.write( "= 4x^2+4x+3\r<BR>\n" );
document.write( "\n" );
document.write( "5. f(x) = 5x + 3<BR>\n" );
document.write( "g(x) = 2x^2-2x + 2 <BR>\n" );
document.write( "Find (fg(x) )<BR>\n" );
document.write( "(5x+3)(2x^2-2x+2)<BR>\n" );
document.write( "2(5x+3)(x^2-x+1)<BR>\n" );
document.write( "10x^3-4x^2+4x+6\r<BR>\n" );
document.write( "\n" );
document.write( "6)f(x)=3x<BR>\n" );
document.write( "g(x)= -2x^2 -2x<BR>\n" );
document.write( "Find (f - g)(x)<BR>\n" );
document.write( "3x-(-2x^2-2x)<BR>\n" );
document.write( "=3x+2x^2+2x<BR>\n" );
document.write( "=2x^2+5x<BR>\n" );
document.write( " <BR>\n" );
document.write( "7)f(x)=3x + 1<BR>\n" );
document.write( "g(x)=x^2-5x -2<BR>\n" );
document.write( "Find g(f(x) )<BR>\n" );
document.write( "(3x+1)^2-5(3x+1)-2<BR>\n" );
document.write( "=6x+1+9x^2-15x-5-2<BR>\n" );
document.write( "=9x^2-9x-6<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #619701 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52790)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=619701\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "Did I answer these correctly?\r\n" );
document.write( "\r\n" );
document.write( "4) f(x) = 2x + 3\r\n" );
document.write( "   g(x)= 2x^2 + 2x \r\n" );
document.write( "   Find f(g(x) )\r\n" );
document.write( "   2(2x^2+2x)+3\r\n" );
document.write( "   =4x(x+1)+3\r\n" );
document.write( "   = 4x^2+4x+3       <<<--- correct.\r\n" );
document.write( "\r\n" );
document.write( "5) f(x) = 5x + 3\r\n" );
document.write( "   g(x) = 2x^2-2x + 2 \r\n" );
document.write( "   Find (fg(x) )\r\n" );
document.write( "   (5x+3)(2x^2-2x+2)\r\n" );
document.write( "   2(5x+3)(x^2-x+1)\r\n" );
document.write( "   10x^3-4x^2+4x+6   <<<--- correct.\r\n" );
document.write( "\r\n" );
document.write( "6) f(x)=3x\r\n" );
document.write( "   g(x)= -2x^2 -2x\r\n" );
document.write( "   Find (f - g)(x)\r\n" );
document.write( "   3x-(-2x^2-2x)\r\n" );
document.write( "   =3x+2x^2+2x\r\n" );
document.write( "   =2x^2+5x          <<<--- correct.\r\n" );
document.write( "\r\n" );
document.write( "7) f(x)=3x + 1\r\n" );
document.write( "   g(x)=x^2-5x -2\r\n" );
document.write( "   Find g(f(x) )\r\n" );
document.write( "   (3x+1)^2-5(3x+1)-2\r\n" );
document.write( "   =6x+1+9x^2-15x-5-2\r\n" );
document.write( "   =9x^2-9x-6        <<<--- correct.\r\n" );
document.write( "</PRE><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );