4400 Higher November 2009 Paper 4 Q2
2
(a) Factorise \(n^2 - 4n\) (2)
(b) Solve \(8 - 5x = 2\) (3)
| Scheme | Marks |
|---|---|
| \(n(n - 4)\) | B2 |
| (2) |
Notes
B2: B1 for factors which, when expanded and simplified, give two terms, one of which is correct except \((n + 2)(n - 2)\) and similar
SC B1 for \(n(n - 4n)\)
| Scheme | Marks |
|---|---|
| \(5x = 8 - 2\) or \(-5x = 2 - 8\) or \(5x = 6\) or \(-5x = -6\) | M2 |
| \(1\frac{1}{5}\) oe | A1 |
| (3) | |
| (5 marks) |
Notes
M2: M1 for \(5x + 2 = 8\)
A1: dep on M2
Do not accept \(\frac{-6}{-5}\)