What is a quadratic inequality?
AAn inequality with two signs
BAn inequality with a quadratic
CAn inequality with no solution
DAn inequality with a square root
Answer & Solution
Correct answer: B. An inequality with a quadratic
1. A quadratic equation sets a quadratic expression equal to 0.
2. Replacing the equal sign with an inequality sign gives a quadratic inequality.
3. Its standard form collects everything on one side against 0, as with the equation.
4. The solution is usually an interval or a union of two intervals rather than a short list.
_Source: OpenStax Intermediate Algebra (CC BY 4.0), section 9.8 Solve Quadratic Inequalities_