Answer
$$2x^{3}y^{2} + x^{2}y - 6x^{2} - 4$$
Work Step by Step
To get rid of the parentheses, we need to look at the signs inside the parentheses in combination with the operation outside the parentheses:
$$13x^{3}y^{2} - 5x^{2}y - 9x^{2} - 11x^{3}y^{2} + 6x^{2}y + 3x^{2} - 4$$
We combine like terms to simplify:
$$2x^{3}y^{2} + x^{2}y - 6x^{2} - 4$$
