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Mathematics, 15.09.2021 01:10 melissadelcid43

John sees the expression x^2+3x-5. He decides to substitute 7 for the first x and 2 for the second x. What axiom has he violated?

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John sees the expression x^2+3x-5. He decides to substitute 7 for the first x and 2 for the second x...

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