f = lambda x: (x ** 2) - 27 fd = lambda x: x * 2 a = 50 while a > (a := a - f(a) / fd(a)): print(a)
Standard input is empty
25.27 13.169230312623665 7.609732014284865 5.578910083156939 5.2092825345429645 5.196168970075266 5.19615242273298 5.196152422706632