| Exam Board | OCR |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Marks | 4 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Inequalities |
| Type | Solve quadratic inequality |
| Difficulty | Moderate -0.3 This is a straightforward quadratic inequality requiring expansion to x² - 3x - 18 < 0, factorization to (x+3)(x-6) < 0, and identifying the solution -3 < x < 6. It's slightly easier than average as it follows a standard C1 procedure with no conceptual surprises, though it does require multiple routine steps. |
| Spec | 1.02g Inequalities: linear and quadratic in single variable |
Find the set of values of $x$ for which
$$(x - 1)(x - 2) < 20.$$ [4]
\hfill \mbox{\textit{OCR C1 Q2 [4]}}