document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143143>Question 143143</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The area of a rectangular parcel of land is 720 square meters. The length of the land is 4 meters less than twice the width.<BR>\n" );
document.write( "A. Write an equation that can be used to find the dimensions of the land.<BR>\n" );
document.write( "B. Solve the equation written in part A to find the dimensions of the land.<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 #104188 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=104188\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The area of a rectangle is given by length times width:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=LW ALIGN=MIDDLE  ALT=\"A=LW\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "For this rectangle: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L+=+2W+-4 ALIGN=MIDDLE  ALT=\"L+=+2W+-4\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so the area is then <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=%282W-4%29W ALIGN=MIDDLE  ALT=\"A=%282W-4%29W\"   DISABLED_style= \"max-width:90%; height:auto;\" >, but this is equal to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=720%2Am%5E2 ALIGN=MIDDLE  ALT=\"720%2Am%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282W-4%29W=720 ALIGN=MIDDLE  ALT=\"%282W-4%29W=720\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2W%5E2-4W-720=0 ALIGN=MIDDLE  ALT=\"2W%5E2-4W-720=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=W%5E2-2W-360=0 ALIGN=MIDDLE  ALT=\"W%5E2-2W-360=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Solving the quadratic gives you the width which can be substituted into <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=L=2W-4 ALIGN=MIDDLE  ALT=\"L=2W-4\"   DISABLED_style= \"max-width:90%; height:auto;\" > to calculate the length.\r<BR>\n" );
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document.write( "You can do your own arithmetic for part B.  Hint:  The quadratic factors quite neatly, but one of the roots will be negative.  You can exclude that root since you are looking for a positive measure of length. </SPAN>\n" );
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