| Exam Board | OCR MEI |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Year | 2010 |
| Session | January |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Solving quadratics and applications |
| Type | Rearranging formula - multi-step isolation with nested operations |
| Difficulty | Easy -1.8 This is a straightforward algebraic manipulation requiring only squaring both sides and rearranging linearly. It involves basic operations (square, multiply, subtract) with no quadratic solving needed despite the topic classification. Significantly easier than typical A-level questions. |
| Spec | 1.02b Surds: manipulation and rationalising denominators |
1 Rearrange the formula $c = \sqrt { \frac { a + b } { 2 } }$ to make $a$ the subject.
\hfill \mbox{\textit{OCR MEI C1 2010 Q1 [3]}}