find the sum of 2x² + 5xy + 3x² and 3x² - 2xy - y²
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Answer:
8x² + 3xy - y²
Step-by-step explanation:
(2x² + 5xy + 3x²) + (3x² - 2xy -y²)
(2x² + 3x² + 3x²) + (5xy - 2xy) -y²
8x² + 3xy - y² = ans