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Verified answer
➡Un = 3n²Maka Suku ke 6 :
U6 = 3(6)²
U6 = 3 x 36
U6 = 108
➡Un = 4n - 1
Maka suku ke 50 :
U50 = 4n - 1
U50 = 4(50) - 1
U50 = 200 - 1
U50 = 199
➡Un = (n + 1)(n+2)
Maka suku ke 24 :
U24 = (n + 1)(n + 2)
U24 = (24 + 1)(24 + 2)
U24 = 25 x 26
U24 = 650