Question: Evaluate (2 + 1)3 by two methods: a) let u = 2 + 1 b) Expand (2 + 1)3 Compare the results, and explain the

Evaluate (2 + 1)3 by two methods: a) let u = 2 + 1 b) Expand (2 + 1)3 Compare the results, and explain the difference in the appearance of the answers obtained in a and b

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