document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=288691>Question 288691</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Barbie and Ken planned to build a square house that was x feet on each side. Then they revised the plan so that one side was lengthened by 20 feet and the other side was shortened by 6 feet. Find a polynomial function A(x) that gives the are of the revised house in square feet. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #209220 by </B><A HREF=/tutors/aboutme.mpl?userid=texttutoring><B>texttutoring(324)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=texttutoring><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=texttutoring><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=209220\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Originally, each side had a length of x.\r<BR>\n" );
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document.write( "After the changes, we now have length=l=x+20, and width=w=x-6\r<BR>\n" );
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document.write( "The area of a rectangle is just A=l*w\r<BR>\n" );
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document.write( "A=(x+20)(x-6)<BR>\n" );
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