document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=306128>Question 306128</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose f(x) = x^2 + 9x. Simplify  f(x + h)- f(x) / h . </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #219131 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=219131\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose f(x) = x^2 + 9x. Simplify f(x + h)- f(x) / h .<BR>\n" );
document.write( "---<BR>\n" );
document.write( "f(x+h) = (x+h)^2 + 9(x+h) = x^2 + 2hx + h^2 + 9x + 9h<BR>\n" );
document.write( "----<BR>\n" );
document.write( "----<BR>\n" );
document.write( "f(x+h)-f(x) = 2hx +h^2+9h<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Finally: <BR>\n" );
document.write( "f(x + h)- f(x) / h  =  2x + h + 9<BR>\n" );
document.write( "========================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H<BR>\n" );
document.write( "======================================== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );