Higher November 2017 Paper 1 Q5
5.
(a) Expand and simplify \((x - 5)(x + 2)\). [2]
(b) Simplify \(3a^2 \times 6a^{-1}\). [2]
| Scheme | Marks | Comments |
|---|---|---|
| \(x^2 - 3x - 10\) | B2 | B1 for \(x^2 - 3x + \ldots\) or for any three correct terms in \(x^2 + 2x - 5x - 10\) |
| Scheme | Marks | Comments |
|---|---|---|
| \(18a\) | B2 | Accept \(18\,a^1\) for 2 marks. B1 for \(k \times a^1\) or equivalent |
| (4) |