[참고] Doing Math With Python - 저자 : AMIT SAHA



#이차방정식의 해 구하기 



# 근의공식 


def roots(a,b,c):

    D = (b*b - 4*a*c)**0.5        


    x_1 = (-b + D) / (2*a)

    x_2 = (-b - D) / (2*a)


    print('x1 : {0}'.format(x_1))

    print('x2 : {0}'.format(x_2))


if __name__ == '__main__':

    a = input('Enter a: ')

    b = input('Enter b: ')

    c = input('Enter c: ')

    roots(float(a), float(b), float(c))


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