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Mathematics, 30.07.2019 20:30 yialefi
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prove that for every integer n , -2, -1, 0, 1, 2, 3, the expression n2 + n will always be even.
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Show 2 different solutions to the task.
prove that for every integer n , -2, -1, 0, 1, 2, 3,...
prove that for every integer n , -2, -1, 0, 1, 2, 3,...
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