document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=319499>Question 319499</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If two adjacent edges of a given square were made to be 2 cm longer, the area of the resulting square contains 84 more square centimeters than the original. How long is an edge of the original square? </SPAN>\n" );
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document.write( "Let the  length of square be x cm<BR>\n" );
document.write( "the increased length = x+2\r<BR>\n" );
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document.write( "x^2+84 = (x+2)^2<BR>\n" );
document.write( "x^2+84=x^2+4x+4<BR>\n" );
document.write( "4x=80<BR>\n" );
document.write( "x=20 cm<BR>\n" );
document.write( "the length of original square </SPAN>\n" );
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