Given the function f(x) = x4 – x3 – 2x2, on which intervals is f(x) ≥ 0?

Step-by-step explanation:

The given polynomial has zeros:

By the complex conjugate property, is also a zero of the polynomial.

The polynomial can be written in factored form as:

We expand to get:

We expand further to get:

The last choice is correct.