Solve the Problem $$\text { Use Newton's method to find the two real solutions of the equation } x ^ { 4 } - 3 x ^ { 3 } - 3 x ^ { 2 } - 3 x + 4 = 0$$

Solve the problem.
- $$\text { Use Newton's method to find the two real solutions of the equation } x ^ { 4 } - 3 x ^ { 3 } - 3 x ^ { 2 } - 3 x + 4 = 0$$