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  1. public ArrayList<Double> findRoots(double a, double b, doublec) {   ArrayList<Double> ret = new ArrayList<>();   double bb4ac = b*b-4*a*c;   if (0.0 <= bb4ac)  {     double xxxx = Math.sqrt(bb4ac);     ret.add( (-b + xxxx)/ ( 2 . 0 *a...

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