document.write( "Question 363028: If the sides of a square are each increased by 4 inches, the area becomes
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document.write( "121 square inches. Find the perimeter of the original square.
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Algebra.Com's Answer #258768 by mananth(16946)![]() ![]() You can put this solution on YOUR website! If the sides of a square are each increased by 4 inches, the area becomes \n" ); document.write( "121 square inches. Find the perimeter of the original square. \n" ); document.write( ".. \n" ); document.write( "let side =x \n" ); document.write( "x+4 is the increased length \n" ); document.write( "... \n" ); document.write( "Area = L^@ \n" ); document.write( "(x+4)^2=121 \n" ); document.write( "x^2+8x+16=121 \n" ); document.write( "x^2+8x-105=0 \n" ); document.write( "x^2+15x-7x-105=0 \n" ); document.write( "x(x+15)-7(x+15)=0 \n" ); document.write( "(x+15)(x-7)=0 \n" ); document.write( "x= 7 \n" ); document.write( "perimeter = 4L = 28 inches \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |