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Theorem: If n^2 is positive, then n is positive. Proof: Suppose that n^2 is positive. Because the implication is true, we can conclude that n is positive. ________________________________________________________________________________ What is wrong with the following argument (which...

Theorem: If n^2 is positive, then n is positive. Proof: Suppose that n^2 is positive. Because the implication is true, we can conclude that n is positive. ________________________________________________________________________________ What is wrong with the following argument (which...