Higher June 2017 Paper 2 Q9
9.
(a) Expand and simplify \((2x + 3)(x - 5)\). [2]
(b) Factorise \(x^2 + 5x + 6\). [1]
| Scheme | Marks | Comments |
|---|---|---|
| \(2x^2 - 7x - 15\) | B2 | B1 for \(2x^2 - 10x + 3x - 15\) or B1 for FT correct collection of like terms provided at least 3 of the 4 terms are correct If no marks, award SC1 for answers of \(2x^2 - 13x - 15\) or \(2x^2 + 13x - 15\) |
| Scheme | Marks | Comments |
|---|---|---|
| \((x + 2)(x + 3)\) | B1 | CAO |
| (3) |