Higher November 2018 Unit 1 Q16
16. Simplify the following expression. [4]
\[\frac{4x^2 - 7x - 2}{4x - 8}\]| Scheme | Marks | Comments |
|---|---|---|
| (Numerator) \((4x + 1)\,(x - 2)\) | B2 | B1 for \((4x \;…..\; 1)\,(x \;…..\; 2)\) Allow equivalent e.g. \((x \;…..\, 0{\cdot}25)\,(4x \;…..\; 8)\) |
| (Denominator) \(4\,(x - 2)\) | B1 | |
| \(\dfrac{4x + 1}{4}\) or \(x + \dfrac{1}{4}\) \((x \neq 2)\) | B1 | Mark final answer. FT provided no more than 1 previous error and provided simplification required. |