document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=821867>Question 821867</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The length of a garden is 20 yards more than its width. The area is 300 square yards. What are the dimensions? This is on a worksheet but my teacher didn't teach us how to do this. Help? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #494481 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=494481\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the area of a rectangle is length times width, <BR>\n" );
document.write( "let x be the width of the rectangle and the length is x+20<BR>\n" );
document.write( "now we can write the formula for the area as<BR>\n" );
document.write( "300 = x * (x+20)<BR>\n" );
document.write( "300 = x^2 +20x<BR>\n" );
document.write( "subtract 300 from both sides of the =<BR>\n" );
document.write( "x^2 +20x -300 = 0<BR>\n" );
document.write( "this quadratic can be factored into<BR>\n" );
document.write( "(x+30) * (x-10) = 0<BR>\n" );
document.write( "therefore the two possible values for x are -30 and 10<BR>\n" );
document.write( "we are looking for a positive value in this case, soooooooo<BR>\n" );
document.write( "x = 10 and<BR>\n" );
document.write( "the width is 10 yards and the length is 30 yards<BR>\n" );
document.write( " </SPAN>\n" );
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