Higher November 2017 Paper 2 Q5
5.
(a) Solve \(11x - 3 = 9x + 25\). [3]
(b) Factorise \(5x^2 + 10x\). [2]
| Scheme | Marks | Comments |
|---|---|---|
| \(11x - 9x = 25 + 3\) | B1 | FT until 2nd error |
| \(2x = 28\) or \(x = 28/2\) | B1 | |
| \(x = 14\) | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| \(5x(x + 2)\) | B2 | B1 for a correct partially factorised answer, or \(5x(x\ \ldots)\) or \(5x(\ \ldots + 2)\) |
| (5) |