Higher November 2021 Paper 5 Q15
15 Write \(\sqrt{20} + \sqrt{45}\) in the form \(k\sqrt{5}\). [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(5\sqrt{5}\) final answer | 3 | M2 for \(2\sqrt{5}\) and \(3\sqrt{5}\) or M1 for \(\sqrt{4 \times 5}\) or better or \(\sqrt{9 \times 5}\) or better | |