Answer: 7y^2 + 3y + 10
Explanation:
(5y^2 + 3y + 7) - (-2y^2 - 3)
= 5y^2 + 3y + 7 +2y^2 + 3
= 5y^2 + 2y^2 + 3y + 7 + 3
= 7y^2 + 3y + 10
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