document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=698671>Question 698671</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I haven't taken algebra in many many years. I can't remember it!<BR>\n" );
document.write( "The problem says \"Completely factor the expression: 16x^2-81y^2<BR>\n" );
document.write( "Thank you for your help!<BR>\n" );
document.write( "Melissa </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #430931 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=430931\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 16x^2-81y^2<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Difference of squares:<BR>\n" );
document.write( "(4x)^2 - (9y)^2<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Factor:<BR>\n" );
document.write( "= (4x-9y)(4x+9y)<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" );