(3x2+xy-5y2) + (2x2-xy+3y2)
Dh

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

1. 34

2. No solution

3. -56

4. 341

5. -5

6. 0

Step-by-step explanation:

I don’t know if all of them are right but I hope I helped