document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=664406>Question 664406</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The area of the base of a rectangular desk telephone is 780 square centimeters. The length of the rectangular telephone is 4 centimeters longer than its width. What is the length and width?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #413726 by </B><A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><B>ReadingBoosters(3246)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><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=413726\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given <BR>\n" );
document.write( "a = 780 <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cm%5E2 ALIGN=MIDDLE  ALT=\"cm%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, which is (l)(w)<BR>\n" );
document.write( "l = w+4<BR>\n" );
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document.write( "Plug and Play!<BR>\n" );
document.write( "(w+4)(w) = 780<BR>\n" );
document.write( "Distribute the w<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=w%5E2 ALIGN=MIDDLE  ALT=\"w%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 4w = 780<BR>\n" );
document.write( "create the quadratic<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=w%5E2 ALIGN=MIDDLE  ALT=\"w%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 4w - 780 = 0<BR>\n" );
document.write( "(w-  )(w+ ) mixed sign due to the + 4 and - 780<BR>\n" );
document.write( "Find multiple of 780 that subtracts to 4:  30,26<BR>\n" );
document.write( "(w-26)(w+30)<BR>\n" );
document.write( "w-26=0, so w=26<BR>\n" );
document.write( "w+30=0, so w=-30<BR>\n" );
document.write( "Width cannot be negative, so the width is 26 cm<BR>\n" );
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document.write( "l = 26 + 4 = 30 cm is the length<BR>\n" );
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document.write( "Check<BR>\n" );
document.write( "a = 26(30) = 780<BR>\n" );
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