4MA0 Higher June 2016 Paper 4 Q14
14 Simplify \(\dfrac{x^2 - 25}{2x^2 - 9x - 5}\)
(3)
| Scheme | Marks |
|---|---|
| \((x - 5)(x + 5)\) | M1 |
| \((2x + 1)(x - 5)\) | M1(indep) |
| \(\dfrac{x + 5}{2x + 1}\) | A1 |
| (3) |
Notes
M1: For \((x + 5)(x - 5)\)
M1(indep): For \((2x + 1)(x - 5)\) or
\(2(x + 0.5)(x - 5)\) or
\(2(2x + 1)(0.5x - 2.5)\)
A1: cao
No ISW