Comprehensive set of 27 quadratic inequality problems designed to test algebra skills from basic factoring to complex rational expressions.

-4 ≤ x ≤ 0
-1 ≤ x ≤ 4
x < -3 or x > 2
x < -1 or x > 3
x < -3 or x > 5
x ≤ -6 or x ≥ 3
x ≤ -5 or x ≥ 2
x ≤ -3 or x ≥ 12
-8 < x < 1
x < -3 or x > 3/7
-5 ≤ x ≤ 8
x < -2 or x > 5
-1 < x < 4
x < -7 or x > 5
x < -3/2 or x > 1
x ≤ 1/4 or x ≥ 1
-2 < x < 3
x ≤ -3/2 or x ≥ 1
x < 3 or x ≥ 7
x < -4 or x ≥ 7/3
x < -3/2 or x ≥ 1/5
x ≤ -3 or x > 1/2
x ≤ -11 or x > -6
x < 4 or x ≥ 13/2
x ≤ -9/2 or -3/2 < x ≤ 3
x < 5/2 or x ≥ 3
x ≤ -4 or -1 < x ≤ 2