Simplify the polynomial by writing each of its terms in standard form.

12a^2 * 3ba -2ba * 3ab^2 + 11aba

To simplify the polynomial, we can start by expanding each term and then combining like terms.

12a^2 * 3ba = 36a^3b

-2ba * 3ab^2 = -6a^2b^3

11aba = 11a^2b

Putting it all together, we get:

36a^3b - 6a^2b^3 + 11a^2b.

This is the simplified polynomial in standard form.