How do you answer 2x 5y2 and -3x-y-3?

To answer the expression (2x + 5y^2) and (-3x - y - 3), you can combine like terms by adding or subtracting the two expressions. The result would be ((2x - 3x) + (5y^2 - y - 3)), which simplifies to (-x + 5y^2 - y - 3). Therefore, the simplified expression is (-x + 5y^2 - y - 3).