document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=653072>Question 653072</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If f(x) = x^2 - 6x find:\r<BR>\n" );
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document.write( "f(a+1)-f(a) = </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #408234 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=408234\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x) = x^2 - 6x\r<BR>\n" );
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document.write( "f(a) = a^2 - 6a\r<BR>\n" );
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document.write( "f(x) = x^2 - 6x\r<BR>\n" );
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document.write( "f(a+1) = (a+1)^2 - 6(a+1)\r<BR>\n" );
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document.write( "f(a+1) = (a+1)(a+1) - 6(a+1)\r<BR>\n" );
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document.write( "f(a+1) = a^2 + 2a + 1 - 6a - 6\r<BR>\n" );
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document.write( "f(a+1) = a^2 - 4a  - 5\r<BR>\n" );
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document.write( "f(a+1) - f(a)\r<BR>\n" );
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document.write( "a^2 - 4a  - 5 - (a^2 - 6a)\r<BR>\n" );
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document.write( "a^2 - 4a  - 5 - a^2 + 6a\r<BR>\n" );
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document.write( "2a  - 5\r<BR>\n" );
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document.write( "So f(a+1) - f(a) = <font color=\"red\">2a - 5</font> </SPAN>\n" );
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