document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=43820>Question 43820</A>: <I><SPAN STYLE=\"word-break: break-all;\"> use the difference of squares pattern to factor the following.<BR>\n" );
document.write( "(x+6)^2 - (x+9)^2. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #28880 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=28880\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> From <BR>\n" );
document.write( "(x+6)^2 - (x+9)^2<BR>\n" );
document.write( "we recognize it is in the pattern <BR>\n" );
document.write( "a^2 - b^2 = (a + b)(a - b)<BR>\n" );
document.write( "and so we can factor it like that<BR>\n" );
document.write( "[(x+6)+(x+9)][(x+6)-(x+9)] =<BR>\n" );
document.write( "(2x+15)(-3) = <BR>\n" );
document.write( "-6x - 45 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );