document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=933128>Question 933128</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write an equation that expresses side l as a function of the area A and the perimeter P. What must be the relationship between P and A if this equation has a real solution?\r<BR>\n" );
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document.write( "So far, I've determined that A/w=l. I can replace w with ((P/2)-l). However, I don't know what to do from there. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #566633 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=566633\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write an equation that expresses side l as a function of the area A and the perimeter P. What must be the relationship between P and A if this equation has a real solution?<BR>\n" );
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document.write( "If this is a rectangle:<BR>\n" );
document.write( "Area = L*W --> W = A/L<BR>\n" );
document.write( "P = 2L + 2W --> L = (P - 2W)/2<BR>\n" );
document.write( "L = P/2 - A/L<BR>\n" );
document.write( "L^2 = PL/2 - A<BR>\n" );
document.write( "2L^2 - PL + A = 0<BR>\n" );
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