Foundation June 2017 Paper 3 Q4
4
(a) Expand and simplify.\[5(x - 2) - 2(x - 4)\]
[2]
(b) Factorise fully.\[10x^2 + 6x\]
[2]
(c) Simplify.\[(x^5)^2\]
[1]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(3x - 2\) final answer | 2 | M1 for \(5x - 10\) or \(-2x + 8\) or B1 for \(3x + j\) or \(kx - 2\) \((k \ne 0)\) final answer | \(3x\) + – 2 scores 1 mark \(j\) can be 0 |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(2x(5x + 3)\) | 2 | B1 for \(2(5x^2 + 3x)\) or \(x(10x + 6)\) | |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(x^{10}\) | 1 | Not, \(x \times x \times \ldots\) | |