document.write( "Question 36833: if a number is decreased by its square, the result is 2 over 9. find the number.
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Algebra.Com's Answer #22621 by vidhyak(98)![]() ![]() ![]() You can put this solution on YOUR website! Let the number be x \n" ); document.write( "and the square of the number be x^2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x- x^2 = 2/9 \n" ); document.write( "Multiply by 9 on both sides \n" ); document.write( "9x- 9x^2 = 2 \n" ); document.write( "9x- 9x^2 - 2 = 0 \n" ); document.write( "-9x^2 +9x -2 = 0 \n" ); document.write( "Multiply by a -1 on both sides \n" ); document.write( "9x^2 -9x +2 = 0 \n" ); document.write( "9x^2 -6x - 3x +2 = 0 \n" ); document.write( "3x(3x-2) -1(3x - 2) = 0 \n" ); document.write( "(3x -1 )(3x - 2) = 0\r \n" ); document.write( "\n" ); document.write( "X = 1/3, 2/3\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Verify the results\r \n" ); document.write( "\n" ); document.write( "x - x^2 \n" ); document.write( "1/3 - (1/3)^2 \n" ); document.write( "1/3 - 1/9\r \n" ); document.write( "\n" ); document.write( "3-1 \n" ); document.write( "---- \n" ); document.write( "9\r \n" ); document.write( "\n" ); document.write( "= 2/9\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x - x^2 \n" ); document.write( "2/3 - (2/3)^2 \n" ); document.write( "2/3 - 4/9\r \n" ); document.write( "\n" ); document.write( "6-4 \n" ); document.write( "---- \n" ); document.write( "9\r \n" ); document.write( "\n" ); document.write( "= 2/9 \n" ); document.write( " |