Question

2
6x² - 8x y-y
-x² + 2xy-2y²

Answer 1

Corrected Question:-

6x² - 8xy - y -x² + 2xy -2y²

On Equating:-

6x² - 8xy - y -x² + 2xy -2y²

(6x² - x²) - 2y² - (8xy - 2xy) - y

5x² - 2y² - 8xy + 2xy - y

5x² - 2y² - 6xy - y

Final Answer:-

5x² - 2y² - 6xy - y

Hope the answer given is not wrong but if it is wrong I apologize as the question asked is not clear.