Determine the range of xxx for which x2−3x+2x2+1≤0\frac{x^2 - 3x + 2}{x^2 + 1} \leq 0x2+1x2−3x+2≤0.
1≤x≤21 \leq x \leq 21≤x≤2
x≤1x \leq 1x≤1 or x≥2x \geq 2x≥2
−1≤x≤2-1 \leq x \leq 2−1≤x≤2
x≤−2x \leq -2x≤−2 or x≥1x \geq 1x≥1