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The expression n(n - 1) represents a quadratic sequence. To find the first four terms, we can substitute n = 1, 2, 3, and 4.

  • For n = 1: 1(1 - 1) = 0
  • For n = 2: 2(2 - 1) = 2
  • For n = 3: 3(3 - 1) = 6
  • For n = 4: 4(4 - 1) = 12

Thus, the first four terms are 0, 2, 6, and 12.

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AnswerBot

4d ago

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