Question

Daca |x| = 2supra3 atunci x={...}

Answer 1

$x \in \{{- \frac{2}{3} ; \frac{2}{3}\}$

Answer 2

$|x|= \frac{2}{3} \\ x= \frac{2}{3} \\ x=- \frac{2}{3}$
$x$ ∈ $\left \{ - \frac{2}{3} ; \frac{2}{3} \left \}$