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Verified answer
Diketahui : suku pertama = a = U1 = 0suku kedua = U2 = 2x
Pertama mencari beda dulu
b = U2 - U1 = 2x - 0 = 2x
Ditanya U8
Rumus Un = a + (n-1)b
U8 = 0 + (8-1)2x
U8 = 0 + 7(2x)
U8 = 14x