document.write( "Question 715600: If two opposite sides of a square are increased by 10 meters and the other sides are decreased by 5 meters, the area of the rectangle that is formed is 76 square meters. Find the area of the original square. \n" ); document.write( "
Algebra.Com's Answer #439503 by mananth(16946)\"\" \"About 
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let the side of square be x\r
\n" ); document.write( "\n" ); document.write( "x+10
\n" ); document.write( "and x-5 are the sides of the rectangle\r
\n" ); document.write( "\n" ); document.write( "(x+10)(x-5)= 76\r
\n" ); document.write( "\n" ); document.write( "x^2-5x+10x-50=76\r
\n" ); document.write( "\n" ); document.write( "x^2+5x-126=0\r
\n" ); document.write( "\n" ); document.write( "x^2+14x-9x-126=0\r
\n" ); document.write( "\n" ); document.write( "x(x+14)-9(x+14)=0\r
\n" ); document.write( "\n" ); document.write( "(x+14)(x-9)=0\r
\n" ); document.write( "\n" ); document.write( "x=-14 OR 9\r
\n" ); document.write( "\n" ); document.write( "ignore negative \r
\n" ); document.write( "\n" ); document.write( "side of square is 9\r
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