document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=192028>Question 192028</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 9c^2-121 factor completely. I have no idea where to start. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #144087 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=144087\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> this is the difference of two squares ___ two perfect squares with a minus in between\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the square root of 9c^2 is 3c\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the square root of 121 is 11\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the factors are (3c+11)(3c-11)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "the difference in the signs results in the middle term of the FOILed product being zero (try it!) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );