document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=526032>Question 526032</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A city wants to double the area of a rectangular playground that is 72 feet by 48 feet by adding the same distance X to the length and the width.  Write and solve an equation to find the value of X. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #348297 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=348297\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 72*48 =3456\r<BR>\n" );
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document.write( "(72+x)(48+x)=2*3456\r<BR>\n" );
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document.write( "3456+72x+48x+x^2=6912<BR>\n" );
document.write( "x^2+120x+3456=6912<BR>\n" );
document.write( "x^2+120x-3456-0<BR>\n" );
document.write( "x^2+144x-24x-3456=0<BR>\n" );
document.write( "x(x+144)-24(x+144)=0<BR>\n" );
document.write( "(x+144)(x-24)=0\r<BR>\n" );
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document.write( "x= 24 which is positive.  </SPAN>\n" );
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