x2-4≤0 এর সমাধান কোনটি?

A -2≤x≤2
B -2≤x<2
C -2<x≤2
D -2<x<2

Correct Answer: -2≤x<2

x² - 4 ≤ 2 = > x² ≤ 4 = > x ≤ ±2 = > - 2 ≤ x ≤ 2
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