Solve the Problem $$\text { Use Newton's method to find the four real zeros of the function } f ( x ) = 3 x ^ { 4 } - 6 x ^ { 2 } + 2 = 0 \text {. }$$

Solve the problem.
- $$\text { Use Newton's method to find the four real zeros of the function } f ( x ) = 3 x ^ { 4 } - 6 x ^ { 2 } + 2 = 0 \text {. }$$