Question

please answer this question​

Answer 1

$\frac{ {3}^{n} + {3}^{n + 1} }{ {3}^{n + 1} - {3}^{n} } \\ = \frac{ {3}^{n} (1 + 3)}{ {3}^{n} (3 - 1)} = \frac{4}{2} = 2$