document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143768>Question 143768</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If the sides of a square are lengthened by 7 cm, the area becomes 144cm^2. Find the length of a side of the original square.\r<BR>\n" );
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document.write( "The length of a side of the original square is _____ cm.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #104622 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=104622\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = original side<BR>\n" );
document.write( "x+7 = increased side\r<BR>\n" );
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document.write( "Area = s^2 = (x+7)^2 = 144\r<BR>\n" );
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document.write( "Take the square root of each side:<BR>\n" );
document.write( "x+7 = 12   (it can't be a negative 12!)<BR>\n" );
document.write( "x=5 cm.\r<BR>\n" );
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document.write( "R^2 </SPAN>\n" );
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