This key facts covers Key Patterns within Quadratic Inequalities for GCSE Mathematics. Revise Quadratic Inequalities in Algebra for GCSE Mathematics with 10 exam-style questions and 2 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 3 of 4 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 3 of 4
Practice
10 questions
Recall
2 flashcards
Key Patterns
For a positive parabola (∪ shape) with roots at a and b (where a < b):
| Inequality | Solution | Region |
|---|---|---|
| y > 0 | x < a OR x > b | Outside the roots |
| y < 0 | a < x < b | Between the roots |