document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=687086>Question 687086</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If x + y = 4\r<BR>\n" );
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document.write( "what is the perimeter of a square with side length 2x^2 + 4xy + 2y^2? </SPAN>\n" );
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document.write( "2x^2 + 4xy + 2y^2\r<BR>\n" );
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document.write( "2(x^2 + 2xy + y^2)\r<BR>\n" );
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document.write( "2(x + y)^2\r<BR>\n" );
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document.write( "2(4)^2\r<BR>\n" );
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document.write( "2(16)\r<BR>\n" );
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document.write( "32\r<BR>\n" );
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document.write( "So if x+y = 4, then 2x^2 + 4xy + 2y^2 = 32\r<BR>\n" );
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document.write( "So the side length is 32 units.\r<BR>\n" );
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document.write( "The perimeter is then 32*4 = <font color=\"red\">128 units</font> </SPAN>\n" );
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