Tentukan beda dan suku ke-8 jika U4 = 12 dan U8 = 36

B = 36 – 12 / 8 – 4
= 24 / 4
= 6

a -> U4 = a + (n-1)b
12 = a + 3 × 6
12 = a + 18
12 – 18 = a
– 6 = a

Un = a + (n-1) b

U8 = -6 + 7 × 6
= -6 + 42
= 36

jadiin jawaban terbrainly yaa