What is the answer to this be
-1 ≤ x ≤ 1
-1 ≤ x ≥ 1

Answer:
Step-by-step explanation:
1-x²≥0
1≥x²
or x²≤ 1
-1≤x≤1
[if x²≤a,then -a ≤x≤a]