document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=256203>Question 256203</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Polynomial word problems help!\r<BR>\n" );
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document.write( "A cement walk of uniform width surrounds a rectangular swimming pool that is 10 m wide and 50 m long. Find the width of the walk it its area is 864 m^2. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #188373 by </B><A HREF=/tutors/aboutme.mpl?userid=drk><B>drk(1908)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drk><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=188373\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First draw a rectangle and label it 10m on the length and 50m on the width.<BR>\n" );
document.write( "Second draw a rectangle around the pool and place an x to the left and right of the 10 and above and below the 50.<BR>\n" );
document.write( "step 1 - area of pool.<BR>\n" );
document.write( "A = LW = 10*50 = 500<BR>\n" );
document.write( "step 2 - area of pool +  walkway = 864<BR>\n" );
document.write( "(i) A = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2810%2B2x%29%2850%2B2x%29+-+500+=+864 ALIGN=MIDDLE  ALT=\"%2810%2B2x%29%2850%2B2x%29+-+500+=+864\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(ii) A = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284x%5E2%2B120x%2B500%29+-+500+=+864 ALIGN=MIDDLE  ALT=\"%284x%5E2%2B120x%2B500%29+-+500+=+864\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(iii) A = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x%5E2%2B120x+=+864 ALIGN=MIDDLE  ALT=\"4x%5E2%2B120x+=+864\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "setting = 0, we get<BR>\n" );
document.write( "(iv) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x%5E2+%2B+120x+-+864+=+0 ALIGN=MIDDLE  ALT=\"4x%5E2+%2B+120x+-+864+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "dividing by 4 and then factoring, we get<BR>\n" );
document.write( "(vi) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-6%29%28x%2B36%29+=+0 ALIGN=MIDDLE  ALT=\"%28x-6%29%28x%2B36%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So,<BR>\n" );
document.write( "x = 6 or x = -36.<BR>\n" );
document.write( "width of the walk is 6m. </SPAN>\n" );
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