if not isinstance(a,(int,float))|isinstance(b,(int,float))|isinstance(c,(int,float)): print('参数类型错误') return 0 if (b**2-4*a*c)>0: x1=(-b+math.sqrt(b**2-4*a*c))/(2*a) x2=(-b-math.sqrt(b**2-4*a*c))/(2*a) else: print('方程无解') if x1==x2: print('方程只有一个解') return x1 else: print('方程有两个解') return x1,x2
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