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Mathematics, 01.11.2019 00:31 sar70

Alec simplified expression below. he didn't check his work by submitting 3 for x he notice his two values we're not equa. the l expression give him an answer of 27 and then simplify expression give him an answer of 28 what was alex error when simplifying

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Alec simplified expression below. he didn't check his work by submitting 3 for x he notice his two v...

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