4400 Higher June 2004 Paper 3 Q2
2
(a) Expand \(3(2t + 1)\) (1)
(b) Expand and simplify \((x + 5)(x - 3)\) (2)
(c) Factorise \(10p - 15q\) (1)
(d) Factorise \(n^2 + 4n\) (1)
| Scheme | Marks |
|---|---|
| \(6t + 3\) | B1 |
| (1) |
Notes
B1: cao
| Scheme | Marks |
|---|---|
| \(x^2 - 3x + 5x - 15\) | M1 |
| \(x^2 + 2x - 15\) | A1 |
| (2) |
Notes
M1: for 4 terms ignoring signs or 3 terms with correct signs
| Scheme | Marks |
|---|---|
| \(5(2p - 3q)\) | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| \(n(n + 4)\) | B1 |
| (1) | |
| (5 marks) |