| Exam Board | Edexcel |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Marks | 4 |
| Paper | Download PDF ↗ |
| Topic | Inequalities |
| Type | Solve quadratic inequality |
| Difficulty | Moderate -0.8 This is a straightforward quadratic inequality requiring factorization to (x-9)(x+2) > 0, identifying critical points, and determining the solution regions. It's a standard C1 exercise with routine steps and no conceptual challenges, making it easier than average but not trivial since students must correctly interpret the inequality sign. |
| Spec | 1.02g Inequalities: linear and quadratic in single variable |
Find the set of values of $x$ for which
$$x^2 - 7x - 18 > 0.$$ [4]
\hfill \mbox{\textit{Edexcel C1 Q2 [4]}}