Question

2-3 la puterea x² -1 = 1

Answer 1

$2 - 3^{x^2-1} = 1 \\ \\ \Rightarrow 3^{x^2-1} = 2-1\\ \\\Rightarrow 3^{x^2-1} = 1\\ \\ \Rightarrow x^2-1 = 0 \Rightarrow x^2 = 1 \Rightarrow x = \pm 1$