document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=282082>Question 282082</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Factor completely. Show all work necessary.\r<BR>\n" );
document.write( "\n" );
document.write( "4x^2-9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #204853 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=204853\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This we know as a difference in squares<BR>\n" );
document.write( "4x^2 is one square and 9 is the other<BR>\n" );
document.write( "3^2=9<BR>\n" );
document.write( "(2x)^2=4x^2 <BR>\n" );
document.write( "The middle terms cancel each other out with plus and minus.<BR>\n" );
document.write( "a^2-b^2=(a-b)*(a+b)<BR>\n" );
document.write( "(2x-3)*(2x+3)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );