4400 Higher June 2006 Paper 3 Q13
13
(a) Expand and simplify \((3x - 5)(4x + 7)\) (2)
(b) Simplify \((2p^4)^3\) (2)
(c) Simplify \((64y^6)^{\frac{2}{3}}\) (2)
| Scheme | Marks |
|---|---|
| \(12x^2 + 21x - 20x - 35\) | M1 |
| \(12x^2 + x - 35\) | A1 |
| (2) |
Notes
M1: for 4 correct terms ignoring signs or 3 correct terms with correct signs
A1: Accept \(12x^2 + 1x - 35\)
| Scheme | Marks |
|---|---|
| \(8p^{12}\) | B1 B1 |
| (2) |
Notes
B1: for 8 \(\quad\) B2 for \(8 \times p^{12}\)
B1: for \(p^{12}\) \(\quad\) B1 for \(8 \pm p^{12}\)
| Scheme | Marks |
|---|---|
| \(16y^4\) | B1 B1 |
| (2) | |
| (6 marks) |
Notes
B1: for 16 \(\quad\) B2 for \(16 \times y^4\)
B1: for \(y^4\) \(\quad\) B1 for \(16 \pm y^4\)