4MA0 Foundation January 2014 Paper 1 Q11
11
(a) Simplify \(5c \times 4c\) (1)
(b) Factorise \(4x + x^2\) (2)
(c) Work out the value of \(y^3 + 5y\) when \(y = 2\) (2)
| Scheme | Marks |
|---|---|
| \(20c^2\) | B1 |
| (1) |
Notes
B1: Also accept \(c^2 20\)
| Scheme | Marks |
|---|---|
| \(x(x + 4)\) or \(x(4 + x)\) | B2 |
| (2) |
Notes
B2: Award B2 also for \((x \pm 0)(x + 4)\) oe
Award B1 for factors which, when expanded and simplified, give two terms, one of which is correct except B0 for \((x + 2)(x - 2)\)
| Scheme | Marks |
|---|---|
| \(2^3 + 5 \times 2\) or 8 + 10 | M1 |
| 18 | A1 |
| (2) | |
| (Total 5 marks) |
Notes
A1: cao