October 2020 Paper 1 Q1
1 Simplify \(\left(\dfrac{27}{x^9}\right)^{\frac{2}{3}} \times \left(\dfrac{x^4}{9}\right)\). [2]
| Scheme | Marks | AO |
|---|---|---|
| \(\left(\dfrac{27}{x^9}\right)^{\frac{2}{3}} \times \left(\dfrac{x^4}{9}\right) = \left(\dfrac{9}{x^6}\right) \times \left(\dfrac{x^4}{9}\right) = \dfrac{1}{x^2}\) | M1 A1 | 1.1a 1.1 |
| [2] |
Notes
M1: \(\dfrac{1}{x^6}\) soi
A1: Fully simplified. Allow \(x^{-2}\) oe