import mathdef quadratic(a, b, c): if a==0: x1=(-c)/b x2=(-c)/b return x1,x2 elif (b*b-4*a*c)<0: return"方程无解" elif (b*b-4*a*c) > 0: m = math.sqrt(b * b - 4 * a * c) x1 = (-b + m) / (2 * a) x2 = (-b - m) / (2 * a) return x1, x2 else: x1 =(-b)/(2*a) x2 =(-b)/(2*a) return x1,x2a,b,c=map(int,input().split())print(quadratic(a, b, c))
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