CodePudding user response:

 
By using the formula method 
A=int (input ()) 
B=int (input ()) 
C=int (input ()) 
Sqrtdeta=(b * * * a * c) 2-4 * * 0.5 
X1=(sqrtdeta - b)/(2 * a) 
X2=(- sqrtdeta - b)/(2 * a)