求助，请问各位大神，我这个一元二次方程的代码哪里错了？

#-*-coding:utf-8-*-

import math

def quadratic_equation(a, b, c):

if b*b-4*a*c<0:

print '原方程无解'

elif b*b-4*a*c==0:

print 'x1=x2=', -1*b/2*a

else:

print 'x1=' , (-b+sqrt(b*b-4*a*c))/2*a, 'x2=',(-b+sqrt(b*b-4*a*c))/2*a

return

print quadratic_equation(2, 3, 0)

print quadratic_equation(1, -6, 5)

MISS_time

2017-07-20

源自：初识Python 7-4

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3 回答

luckyxiang
2017-07-20

另外两根应该是一加一减，你两个都是加法写重了

0 回复有任何疑惑可以回复我~

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阿淮666
2017-07-20

def quadratic_equation(a, b, c):
if b * b - 4 * a * c < 0:

print '原方程无解'

elif b * b - 4 * a * c == 0:

print 'x1=x2=', -1 * b / 2 * a

else:

print 'x1=', (-b + sqrt(b * b - 4 * a * c)) / (2 * a), 'x2=', (-b - sqrt(b * b - 4 * a * c)) / (2 * a)

return

quadratic_equation(2, 3, 0)

quadratic_equation(1, -6, 5)