static double sumProductDifference ( int a , int b , int c , int d , int e ) {
  double rootSum = ( double ) ( - 1 * b ) / a ;
  double rootProduct = ( double ) e / a ;
  return Math . abs ( rootSum - rootProduct ) ;
}

static double sumProductDifference ( int a , int b , int c , int d , int e ) { double rootSum = ( double ) ( - 1 * b ) / a ; double rootProduct = ( double ) e / a ; return Math . abs ( rootSum - rootProduct ) ; }
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