4400 Higher November 2009 Paper 4 Q12
12
(a) Expand and simplify \((p + 7)(p - 4)\) (2)
(b) Simplify \(4x^3y^5 \times 3x^2y\) (2)
(c) Simplify \((27q^6)^{\frac{2}{3}}\) (2)
| Scheme | Marks |
|---|---|
| \(p^2 - 4p + 7p - 28\) | M1 |
| \(p^2 + 3p - 28\) | A1 |
| (2) |
Notes
M1: for 4 correct terms ignoring signs or for 3 terms with correct signs
A1: cao
| Scheme | Marks |
|---|---|
| \(12x^5y^6\) | B2 |
| (2) |
Notes
B2: B1 for any two parts correct
| Scheme | Marks |
|---|---|
| \(9q^4\) | B2 |
| (2) | |
| (6 marks) |
Notes
B2: B1 for either 9 or \(q^4\)