document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=167792>Question 167792</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (b)	(l + 2) (l – 4) = 20 cm2, find l<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #123689 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=123689\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (L + 2) (L – 4) = 20 cm2, find L<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "L^2-2L-8 = 20<BR>\n" );
document.write( "L^2-2L-28 = 0<BR>\n" );
document.write( "L = [2 +- sqrt(4-4*1*-28)]/2\r<BR>\n" );
document.write( "\n" );
document.write( "L = [2 +- sqrt(116)]/2\r<BR>\n" );
document.write( "\n" );
document.write( "L = [2 +- 2sqrt(29)]/2\r<BR>\n" );
document.write( "\n" );
document.write( "L = 1+sqrt(29) or x = 1-sqrt(29)<BR>\n" );
document.write( "===================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );