import math a=float(input()) b=float(input()) c=float(input()) def qj (a,b,c): if b**2<4*a*c: return "无解" elif b**2==4*a*c: x=(-b+math.sqrt(b**2-4*a*c))/(2*a) return x else: x1=(-b+math.sqrt(b**2-4*a*c))/(2*a) x2=(-b-math.sqrt(b**2-4*a*c))/(2*a) return x1,x2 if b**2<4*a*c: print(qj(a,b,c)) elif b**2==4*a*c: x=qj(a,b,c) print("x={0}".format(x)) else: x1,x2=qj(a,b,c) print("x1={0}\nx2={1}".format(x1,x2))
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金钟铉