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Verified answer
Mapel : MatematikaKelas : IX SMP
Bab : Barisan dan deret
Pembahasan :
Pola Barisan Persegi Panjang
Un = n(n + 1)
182 = n² + n
n² + n - 182 = 0
(n - 13)(n + 14) = 0
n = 13