4400 Higher November 2005 Paper 4 Q3
3
(a) Factorise \(\quad x^2 - 5x\) (1)
(b) Multiply out \(\quad x(2x + 3y)\) (2)
(c) Expand and simplify \(\quad (x - 4)(x + 2)\) (2)
| Scheme | Marks |
|---|---|
| \(x(x - 5)\) | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| \(2x^2 + 3xy\) | B1 B1 |
| (2) |
| Scheme | Marks |
|---|---|
| \(x^2 - 4x + 2x - 8\) | M1 |
| \(x^2 - 2x - 8\) | A1 |
| (2) | |
| (5 marks) |
Notes
M1: 3 correct terms or 4 correct terms ignoring signs