document.write( "Question 45380: Find two consecutive positive integers such that the sum of their square is 85.\r
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document.write( "I think I start with square root of x plus the square root of x + 1 = 85.\r
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document.write( "If so then I don't know where to go from here.\r
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document.write( "Thanks for help. \n" );
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Algebra.Com's Answer #30118 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Not quite...the setup is like this \n" ); document.write( "x^2 + (x + 1)^2 = 85 \n" ); document.write( "(the sum of the squares) \n" ); document.write( "Now we get \n" ); document.write( "x^2 + x^2 + 2x + 1 = 85 \n" ); document.write( "2x^2 + 2x - 84 = 0 \n" ); document.write( "x^2 + x - 42 = 0 \n" ); document.write( "(x + 7)(x - 6) = 0 \n" ); document.write( "and \n" ); document.write( "x = -7 or x = 6 \n" ); document.write( "but they must be positive, hence your numbers are \n" ); document.write( "6 and 7 \n" ); document.write( " |