Answer:
5x² - 2y²
Step-by-step explanation:
(3x² + xy - 5y²) + (2x² - xy + 3y²)
since you are adding these polynomials, you can remove the parentheses without changing any signs
3x² + xy - 5y² + 2x² - xy + 3y²
align like terms next to each other
3x² + 2x² - 5y² + 3y² + xy - xy
combine like terms
5x² - 2y²
