document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=149704>Question 149704</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a recatngular ro0m is 7ft longer than its wide.its area is 228ft squared.what is the width of the ro0m?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #109825 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=109825\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a recatngular ro0m is 7ft longer than its wide.its area is 228ft squared.what is the width of the ro0m?<BR>\n" );
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document.write( "Let w = width<BR>\n" );
document.write( "then<BR>\n" );
document.write( "w+7 = length<BR>\n" );
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document.write( "Area of a rectangle = length * width<BR>\n" );
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document.write( "228 = (w+7)w<BR>\n" );
document.write( "228 = w^2 + 7w<BR>\n" );
document.write( "0 = w^2 + 7w - 228<BR>\n" );
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document.write( "Factoring, we get:<BR>\n" );
document.write( "0 = (w-19)(w+12)<BR>\n" );
document.write( "w = {19, -12}<BR>\n" );
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document.write( "Since width can't be negative<BR>\n" );
document.write( "w = 19 feet (width)<BR>\n" );
document.write( "w+7 = 26 feet (length)<BR>\n" );
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