Answer:
4x^2 - 6x^2 -6x + 3x +3 - 4
Explanation:
The terms here involve x^0, x, x^2.
Write the x^2 terms first: 4x^2 - 6x^2;
then write the x terms: -6x + 3x; and
then write the constants: 3 - 4
and so we have, in descending powers of x,
4x^2 - 6x^2 -6x + 3x +3 - 4