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Verified answer
Mapel : MatematikaKelas : X SMA
Bab : Eksponen
Pembahasan :
√[3^(2x + 1)] = 9^(x - 2)
3^(2x + 1)/2 = 3^(2x - 4)
(2x + 1)/2 = 2x - 4
2x + 1 = 4x - 8
4x - 2x = 1 + 8
2x = 9
x = 9/2