Foundation November 2021 Paper 1 Q19
19.
(a) Simplify \(5\sqrt{7} + 3\sqrt{7}\). [1]
(b) Work out the value of \(6 + \sqrt[3]{8000}\). [1]
(c) Work out the value of \(3^{20} \div 3^{18}\). [2]
| Scheme | Marks | Comments |
|---|---|---|
| \(8\sqrt{7}\) | B1 | Accept \(8\sqrt[2]{7}\) or \(8 \times \sqrt{7}\) |
| Scheme | Marks | Comments |
|---|---|---|
| 26 | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| 9 | B2 | final answer; not from wrong working B1 for final answer of 32 |
| (4) |