Final answer:
To simplify the expression 6x³y² + (-3x³y²), combine like terms to add the coefficients and keep the variables the same. The simplified expression is 3x³y².
Step-by-step explanation:
To simplify the expression 6x³y² + (-3x³y²), we can combine like terms. In this case, both terms have the same variables raised to the same powers, so we add or subtract the coefficients. The coefficient of the first term is 6, and the coefficient of the second term is -3. Adding these coefficients gives us a final coefficient of 3. Since the variables (x³y²) remain the same, the simplified expression is 3x³y².