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x=2^n+3 x 3^n + 2^n x 3^n+2, x∈N
cat este x


Răspuns :

x=2^(n+3) ×3^n +2^n ×3^n+2
x=2^n×3^n (2³+ 3²)
x=2^n×3^n (8+9)
x=2^n×3^n × 17
x=(2×3)^n × 17
x=6^n × 17
n=1
x=6×17 = 102
n=2
x=6²×17 = 612
pana la n=∞
x={102,612......∞)