MIT 6.189 Ex 2.5.py

def roots(a,b,c):
    d = b**2-4*a*c
    #print d
    if d < 0:
       return "Too complex.", "d =" + str(d)
       
    elif d == 0:
        r1=-b/2*a
        return r1, "d =" + str(d)
    else:
        r1 = (-b + math.sqrt(d))/(2*a)
        r2 = (-b - math.sqrt(d))/(2*a)
        return "There are two real roots: " + str(r1) + ", or " + str(r2), "d =" + str(d)


print "roots(1,2,1) = ", roots(1,2,1)
print "roots(0,0,0) = ", roots(0,0,0)
print "roots(100,200,1000)" , roots(100,200,1000)
print "roots(8,3,1)", roots(8,3,1)
print "roots(4**3,3/8,1-23)" , roots(4**3,3/8,1-23)
print "roots(88,32,611)", roots(88,32,611)
print "roots(222,333,11)", roots(222,333,11)