document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=631134>Question 631134</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Using FOIL, simplify the expression \"(3x + 2)(3x - 2).\" Show that a particular factoring formula leads to the same answer. I know how to use FOIL, I am not sure of another way to solve this other than foil. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #397385 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=397385\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "This is a formula for factoring x^2-y2<BR>\n" );
document.write( "x^2-y^2=(x+y)*(x-y)<BR>\n" );
document.write( "unfactoring<BR>\n" );
document.write( "(x+y)*(x-y)=x^2-y^2<BR>\n" );
document.write( "Here is how it applies here.<BR>\n" );
document.write( "9x^2-4<BR>\n" );
document.write( "BTW<BR>\n" );
document.write( "Here is an alternative to FOIL<BR>\n" );
document.write( "Break up the first factor into two parts 3x and 2<BR>\n" );
document.write( "3x*(3x-2)+2*(3x-2)=9x^2-6x+6x-4=9x^2-4<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );