(a) Prove that the following statement is true for all integers n: If n is even then n³ + n + 3 is odd. (b) Use proof by contradiction to show that there is no positive real number x such that Ꮖ - 2 3x Ꮖ x+2

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Q: (2) Use a proof by ca. If is int er

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A: See the attachment

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