document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=799669>Question 799669</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A gardener has a rectangular flowerbed, 8 m by 6 m. he added a border of uniform width. if the area of the flowerbed was increased by 72m^2, how wide was the border?<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 #482760 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=482760\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Initial area = 8*6 = 48 sqm\r<BR>\n" );
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document.write( "width and length increased by x\r<BR>\n" );
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document.write( "length = 8+2x<BR>\n" );
document.write( "width = 6+2x\r<BR>\n" );
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document.write( "Area = (8+2x)(6+2x)\r<BR>\n" );
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document.write( "(8+2x)(6+2x)-48 = 72 \r<BR>\n" );
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document.write( "48+16x+12x+4x^2-48= 72\r<BR>\n" );
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document.write( "4x^2+28x-72=0\r<BR>\n" );
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document.write( "/4<BR>\n" );
document.write( "x^2+7x-18=0\r<BR>\n" );
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document.write( "x^2+9x-2x-18=0<BR>\n" );
document.write( "x(x+9)-2(x+9) =0\r<BR>\n" );
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document.write( "(x+9)(x-2)=0\r<BR>\n" );
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document.write( "x=-9 OR 2\r<BR>\n" );
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document.write( "ignore negative\r<BR>\n" );
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document.write( "x= 2 </SPAN>\n" );
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