Respuesta :

Answer:

A

Step-by-step explanation:

Express the terms without parenthesis and collect like terms, that is

7x² + 3y - 4 + 5x² + 3y ← collect like terms

= (7x² + 5x²) + (3y + 3y) - 4

= 12x² + 6y - 4 → A
The answer is A

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