document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1083209>Question 1083209</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A factory measuring 60 m by 80 m is surround by a lawn of uniform width. If the area is 57 m2 less than the factory find the width of the lawn.   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #697243 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=697243\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The area of the factory is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+60%2A80+=+4800+ ALIGN=MIDDLE  ALT=\"+60%2A80+=+4800+\"   DISABLED_style= \"max-width:90%; height:auto;\" > m2<BR>\n" );
document.write( "The area of the lawn is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800+-+57+=+4743+ ALIGN=MIDDLE  ALT=\"+4800+-+57+=+4743+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "The combined area of factory and lawn is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800+%2B+4743+=+9543+ ALIGN=MIDDLE  ALT=\"+4800+%2B+4743+=+9543+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+ ALIGN=MIDDLE  ALT=\"+x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the width of the lawn<BR>\n" );
document.write( "I can now say:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+60+%2B+x+%29%2A%28+80+%2B+x+%29+=+9543+ ALIGN=MIDDLE  ALT=\"+%28+60+%2B+x+%29%2A%28+80+%2B+x+%29+=+9543+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4800+%2B+140x+%2B+x%5E2+=+9543+ ALIGN=MIDDLE  ALT=\"+4800+%2B+140x+%2B+x%5E2+=+9543+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5E2+%2B+140x+-+4743+=+0+ ALIGN=MIDDLE  ALT=\"+x%5E2+%2B+140x+-+4743+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+=+1+ ALIGN=MIDDLE  ALT=\"+a+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+140+ ALIGN=MIDDLE  ALT=\"+b+=+140+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+-4743+ ALIGN=MIDDLE  ALT=\"+c+=+-4743+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-140+%2B-+sqrt%28+140%5E2-4%2A1%2A%28-4743%29+%29%29+%2F+%282%2A1%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-140+%2B-+sqrt%28+140%5E2-4%2A1%2A%28-4743%29+%29%29+%2F+%282%2A1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-140+%2B-+sqrt%28+19600+%2B+18972++%29%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28-140+%2B-+sqrt%28+19600+%2B+18972++%29%29+%2F+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-140+%2B-+sqrt%28+38572++%29%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28-140+%2B-+sqrt%28+38572++%29%29+%2F+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28+-140+%2B+196.398+%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28+-140+%2B+196.398+%29+%2F+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+56.398%2F2+ ALIGN=MIDDLE  ALT=\"+x+=+56.398%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+28.199+ ALIGN=MIDDLE  ALT=\"+x+=+28.199+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The width of the lawn is about 28.2 m<BR>\n" );
document.write( "-------------------------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+60+%2B+x+%29%2A%28+80+%2B+x+%29+=+9543+ ALIGN=MIDDLE  ALT=\"+%28+60+%2B+x+%29%2A%28+80+%2B+x+%29+=+9543+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+60+%2B+28.2+%29%2A%28+80+%2B+28.2+%29+=+9543+ ALIGN=MIDDLE  ALT=\"+%28+60+%2B+28.2+%29%2A%28+80+%2B+28.2+%29+=+9543+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+88.2%2A108.2+=+9543+ ALIGN=MIDDLE  ALT=\"+88.2%2A108.2+=+9543+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+9543.24+=+9543+ ALIGN=MIDDLE  ALT=\"+9543.24+=+9543+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Error due to rounding off, I think<BR>\n" );
document.write( "check the math<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );