4MA0 Higher January 2014 Paper 3R Q20
20 Simplify fully \(\;\dfrac{x^2 - 16}{x^2 - 6x + 8}\)
(3)
| Scheme | Marks |
|---|---|
| \(\dfrac{(x + 4)(x - 4)}{(x - 4)(x - 2)}\) | M1 M1 |
| \(\dfrac{x + 4}{x - 2}\) | A1 |
| (3) | |
| (3 marks) |
Notes
M1 M1: M1 for \((x + 4)(x - 4)\)
M1 for \((x - 4)(x - 2)\)
A1: cao