Foundation November 2021 Paper 2 Q13
13 Factorise fully \(\quad 50x + 100\) [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(50(x + 2)\) | B2 | B1 \(25(2x + 4)\) or \(10(5x + 10)\) or \(5(10x + 20)\) or \(2(25x + 50)\) |
Additional guidance
| \((x + 2)50\) | B2 |
| \(50(x + 2\) | B2 |
| \(50(1x + 2)\) | B1 |
| \(50 \times (x + 2)\) or \((x + 2) \times 50\) | B1 |
| Ignore a multiplication sign in B1 response | B1 |
| \(50(x + 2)\) followed by further incorrect simplification | B1 |
| B1 may be awarded for a correct partial factorisation, with no or incorrect answer, even if this is seen amongst multiple attempts |