Uma brincadeira com bhask-sei-lá-quem-indiano e as equações de 2o grau, pra explicar python prum amigo aí ;D

eq2.py

# a * x**2 + b * x + c = 0, a != 0
# (-b +- sqrt(d) ) / 2 * a
# d = b**2 - 4 * a * c
from math import sqrt

#print 3 ** 2
#print sqrt(9)

def get_d(a, b, c):
	return ( b ** 2 ) - ( 4 * a * c )

def get_bsk(a, b, d):
	return [ ( -b + sqrt(d) ) / ( 2 * a ), ( -b - sqrt(d) ) / ( 2 * a ) ]

def solve_eq(a, b, c):
	d = get_d(a, b, c)
	print "[x, x'] = ", get_bsk(a, b, d)

a = 1
b = -4
c = 3
solve_eq(a, b, c)