Verified Answer :

2x − 8y + 3x^2 + 7y − 12x
2x + −8y + 3x^2 + 7y + −12xCombine Like Terms:2x + −8y + 3x^2 + 7y + −12x(3x^2) + (2x + −12x) + (−8y + 7y)3x^2 + −10x + −y
Answer
3x^2 − 10x − y

here,s the answer i got   3x2 - 10x - y just by simplifying