pippalotta pippalotta 04-04-2018 Mathematics contestada (7x² + 3y - 4) + (5x² + 5y) Which is correct? A. 12x² + 8y + 4 B. 12x² - 8y + 4 C. 12x² + 8y - 2 D. 12x² + 8y - 4 Thank you!