document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=312484>Question 312484</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The area of a square is the same as its perimeter. The measure of a side is (x – 4)units. What is the only possible value of x?\r<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 #223381 by </B><A HREF=/tutors/aboutme.mpl?userid=CharlesG2><B>CharlesG2(834)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=CharlesG2><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=223381\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The area of a square is the same as its perimeter. The measure of a side is (x – 4)units. What is the only possible value of x?\r<BR>\n" );
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document.write( "area square = side^2 = a^2<BR>\n" );
document.write( "perimeter square = 4*side = 4a<BR>\n" );
document.write( "a^2 = 4a<BR>\n" );
document.write( "  a = 4<BR>\n" );
document.write( "plug in (x-4) for a<BR>\n" );
document.write( "  x - 4 = 4<BR>\n" );
document.write( "  x = 8\r<BR>\n" );
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document.write( "(x-4)^2 = 4^2 = 16<BR>\n" );
document.write( "4(x-4) = 4x - 16 = 32 - 16 = 16\r<BR>\n" );
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