Higher November 2023 Paper 3 Q22
22 Write \(\quad \dfrac{7}{2a^2} - \dfrac{3}{5a} \quad\) as a single fraction in its simplest form. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| Valid common denominator with at least one correct numerator with all their multiplications correctly processed | M1 | eg \(\dfrac{35}{10a^2}\) and \(\dfrac{6a}{10a^2}\) or \(\dfrac{35a}{10a^3}\) and \(\dfrac{6a^2}{10a^3}\) |
| \(\dfrac{35 - 6a}{10a^2}\) | A1 |
Additional guidance
| \(\dfrac{35 - 6a}{10a^2}\) followed by further work | M1A0 |
| \(\dfrac{35a - 6a^2}{10a^3}\) | M1A0 |