document.write( "Question 404052: If the sides of a square are increased by 4 cm, the area is increased by 4cm square. Find the length of a side of the original square. \n" ); document.write( "
Algebra.Com's Answer #285643 by richard1234(7193)\"\" \"About 
You can put this solution on YOUR website!
Suppose the original square's dimensions are x by x. Then the side length of the new square is x+4, and\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%28x%2B4%29%5E2+=+x%5E2+%2B+4\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x%5E2+%2B+8x+%2B+16+=+x%5E2+%2B+4\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"8x+%2B+16+=+4\" --> no positive solution.
\n" ); document.write( "
\n" );