## Calculus: Early Transcendentals 8th Edition

$(-∞, -3]∪ [3, ∞)$
The inequality$|x|≥3$ can be calculated as follows: We know that if$|x|≥a$, then $x≤-a,x≥a$ … (1) Now, apply equation (1) for expression$|x|≥3$ to get $x≤-3,x≥3$ Hence, the solution set is$(-∞, -3]∪ [3, ∞)$.