from math import sqrt def f(a, b, c): m = 2 * a n = sqrt(b * b - 4 * a * c) return ((-b + n) / m, (-b - n) / m) for i in range(int(input())): a, b, c = map(float,input().split()) x, y = f(a, b, c) print(f"{x:.3f}, {y:.3f}")