| Exam Board | OCR |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Year | 2009 |
| Session | June |
| Marks | 4 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Indices and Surds |
| Type | Rationalize denominator simple |
| Difficulty | Easy -1.2 This is a straightforward rationalizing the denominator question requiring only the standard technique of multiplying by the conjugate (2-√7)/(2-√7) and simplifying. It's a routine C1 exercise with a single clear method and minimal algebraic manipulation, making it easier than average. |
| Spec | 1.02b Surds: manipulation and rationalising denominators |
2 Express $\frac { 8 + \sqrt { 7 } } { 2 + \sqrt { 7 } }$ in the form $a + b \sqrt { 7 }$, where $a$ and $b$ are integers.
\hfill \mbox{\textit{OCR C1 2009 Q2 [4]}}