- Help me solve this direct proof: Conjecture: For any nonzero integer m, m divides m?

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What is low-productivity agriculture? How does it affect farmers and society/agriculture? How could you use two equal sized pieces of paper to show how air resistance affects objects of different shapes? Suppose that n^2|m^2. Prove that n|m.? Valid number not decimal? Look at a map with plate boundaries,where do the UK will be in the future in 1000 Or 10000 years after？how can they move?