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Mathematics, 28.08.2020 23:01 laylay120

Algebra 2: The set of all polynomials is ___ under addition, which is illusrated by the fact that adding 3x² - 2 and 7x⁴ + 4x results in 7x⁴ + 3x² + 4x -3, which is in the set. (Closed, Not closed) (Included, Not included)

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