Solve for xxx: x3−4x≤0x^3 - 4x \leq 0x3−4x≤0.
x≤−2x \leq -2x≤−2 or 0≤x≤20 \leq x \leq 20≤x≤2
−2≤x≤0-2 \leq x \leq 0−2≤x≤0 or x≥2x \geq 2x≥2
x≤0x \leq 0x≤0
x≥2x \geq 2x≥2