November 2021 Paper 1 Q8
8 Simplify \(\quad \sqrt{3}\left(\sqrt{75} + \sqrt{48}\right) \quad\) writing your answer as an integer. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| Alternative method 1 | ||
| \(\sqrt{225} + \sqrt{144}\) or \(15 + 12\) | M1 | |
| 27 | A1 | |
| Alternative method 2 | ||
| \(5\sqrt{3} + 4\sqrt{3}\) or \(9\sqrt{3}\) or \(9 \times 3\) or \(15 + 12\) | M1 | |
| 27 | A1 | |