alexsan3441 alexsan3441

25-05-2023
Mathematics

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(a) Prove that, for all integers a, b and c, if a | (b − 2) and a | (c-5), then a | (bc-10). (b) Prove that, if x is an integer of the form x = m² +2 for some integer m, then x can also be expressed as 4k + 2 or 4k + 3 for some integer k.

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