u8 dan u13 dari pola bilangan segitiga
plisss jawabbb
poin nya bnyk
plisss jawabbb
poin nya bnyk
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Penjelasan dengan langkah-langkah:
Un = 1/2 × n (n + 1)
U8 = 1/2 × 8 (8 + 1)
U8 = 4(8 + 1)
U8 = 4(9)
U8 = 36
--
Un = 1/2 × n (n + 1)
U13 = 1/2 × 13 (13 + 1)
U13 = 1/2 × 13 × 14
U13 = 7 × 13
U13 = 91
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