subtract the sum of 9+xy-x²and x²+1 from the sum of x²+xy-2 and 3xy+7
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19. Subtract the sum of 9 + xy - x ^ 2 and x ^ 2 + 1 from the sum of x ^ 2 + xy - 2and 3xy + 7
Step-by-step explanation:
answer is x² + 3xy - 5
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