Jawaban:
C. (n - 1)(n + 2)
Ganti n dgn suku keberapanya
(1 - 1)(1 + 2) = 0(3) = 0 (Benar)
(2 - 1)(2 + 2) = 1(4) = 4 (Benar)
(3 - 1)(3 + 2) = 2(5) = 10 (Benar)
(4 - 1)(4 + 2) = 3(6) = 18 (Benar)
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Jawaban:
C. (n - 1)(n + 2)
Ganti n dgn suku keberapanya
(1 - 1)(1 + 2) = 0(3) = 0 (Benar)
(2 - 1)(2 + 2) = 1(4) = 4 (Benar)
(3 - 1)(3 + 2) = 2(5) = 10 (Benar)
(4 - 1)(4 + 2) = 3(6) = 18 (Benar)