2,8,14,20,.. hasil jumlah dari 10 bilangan berurutan bersasarkan pola bilang tersebut adalah...? plase bantu pake cara kerjanya☺

U1 = 2
b = 8 - 2 = 6
S10 = ?

Sn = n/2[2U1 + (n-1)b]
S10 = 10/2 [ 2(2) + (10-1) 6]
S10 = 5(4+54)
S10 = 5(58)
S10 = 290

semoga dapat membantu...
Thomas H---

a = 2
b = 8-2 = 6

S10 ..?

Sn=n/2 × {2a+(n-1)b}
S10 = 10/2 × {2×2 + (10-1)6}
S10 = 5 × (4+(9)6}
S10 = 5 × {4+54)
S10 = 5 × 58
S10 = 290