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n in (-oo:+oo)
(1/3)^2*n-1 = 3^5 // - 3^5
(1/3)^2*n-3^5-1 = 0
1/9*n-244 = 0 // + 244
1/9*n = 244 // : 1/9
n = 244/1/9
n = 2196
n = 2196
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