Answer:
6x + 6y -xy + x^y + xy^2
Step-by-step explanation:
[ xy (-x - y -1) ] + 2 (xy + x + y)
-x^2y - xy^2 - xy + 2xy + 2x + 2y
2x + 2y + xy - x^y - xy^2
8x + 8y - (2x + 2y + xy - x^2y - xy^2)
8x + 8y - 2x - 2y -xy + x^y + xy^2
6x + 6y -xy + x^y + xy^2