soal tentang limit tolong bantu

[tex] = \frac{(x + 1)(x - 1)}{( {x}^{2} + 1)(x - 1) } \\ = \frac{(x + 1)}{ {x}^{2} + 1)} = \frac{2}{2} = 1[/tex]
maaf Kalau salah yahhh