无法理解-6怎么来的
import math
def quadratic_equation(a, b, c):
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
return x1,x2
print quadratic_equation(2, 3, 0)
print quadratic_equation(1, -6, 5)
import math
def quadratic_equation(a, b, c):
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
return x1,x2
print quadratic_equation(2, 3, 0)
print quadratic_equation(1, -6, 5)
2018-08-07
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