Higher November 2023 Paper 4 Q18
18 Solve this quadratic equation by factorisation.
\[2x^2 - 6x - 24 = 5x - 3\][4]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(2x^2 - 6x - 5x - 24 + 3\) [= 0] or better | M1 | e.g. \(2x^2 - 11x - 21\) [= 0] | |
| \((2x + 3)(x - 7)\) | M2 | M1 for two brackets giving two correct terms | |
| −1.5 oe 7 | B1 | FT their brackets | |