Higher November 2020 Paper 4 Q17
17 Expand and simplify.
\((x + 1)(x - 1)(x + 2)\) [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(x^3 + 2x^2 - x - 2\) final answer | 3 | M2 for the correct expansion and simplification of any two of the given brackets e.g. \(x^2 - 1\), \(x^2 + 3x + 2\) or \(x^2 + x - 2\) or M1 for expansion of any two of the given brackets with three correct terms | the \(x\) term counts as two correct terms |