Page 48 - Modul Media Pembelajaran Berbasis TIK (AMANDA PUSPITA) (Real)_Neat
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Kunci Jawaban:
Un = 3n – 5 Sn = n/2 ( 3n – 7 )
Sn = n/2 ( 5n – 19 )
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Sn = n2 + 5/2 n 5
2, 5, 8, 11, 14, … 2
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