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Simplify the following expressions by adding the like terms: 3a² - 2a - 7 + 3a + 4 - 2a² + 9a x² + 6xy + 5y² - 6xy + 2y² 1 2​

User Karlzt
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9ax^2+a^2+7y^2+a-3

Hope that helps
User Guannan He
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