document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1013620>Question 1013620</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The width of a rectangle is 4 inches shorter than its length.If the diagonal of the rectangle is 20 iches,What is the width of the rectangle ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #629916 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=629916\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We have<BR>\n" );
document.write( "W = L - 4<BR>\n" );
document.write( "and<BR>\n" );
document.write( "W^2 + L^2 = 20^2<BR>\n" );
document.write( "Now substitute and get<BR>\n" );
document.write( "(L-4)^2 + L^2 = 20^2<BR>\n" );
document.write( "L^2 - 8L + 16 + L^2 = 400<BR>\n" );
document.write( "2L^2 - 8L - 384 = 0<BR>\n" );
document.write( "L^2 - 4L - 192 = 0<BR>\n" );
document.write( "(L - 16)(L + 12) = 0<BR>\n" );
document.write( "L = 16 so that<BR>\n" );
document.write( "W = 12 inches </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );