ANSWER
[tex]2 {x}^{3} - 2 {x}^{2} - 4x[/tex]
EXPLANATION
A cubic polynomial should have degree 3 .
A trinomial is a simplified polynomial with 3 terms.
A cubic polynomial will therefore have 3 terms with degree 3.
The correct choice is
[tex]2 {x}^{3} - 2 {x}^{2} - 4x[/tex]
