4MA0 Higher January 2017 Paper 4R Q7
7
(a) Expand \(\;3(4p + 5)\) (1)
(b) Factorise \(\;6r + 14\) (1)
(c) Work out the value of \(\;y^2 - 3y\;\) when \(\;y = -5\) (2)
(d) Simplify \(\;\dfrac{w^5 \times w^8}{w^4}\) (2)
(e) Write down the inequality shown on the number line. (2)
| Scheme | Marks |
|---|---|
| \(12p + 15\) | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| \(2(3r + 7)\) | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| \((-5)^2 - 3 \times -5\) oe | M1 |
| 40 | A1 |
| (2) |
Notes
M1: or +25 or +15
| Scheme | Marks |
|---|---|
| \(\dfrac{w^{13}}{w^4}\) or \(w \times w^8\) or \(w^5 \times w^4\) | M1 |
| \(w^9\) | A1 |
| (2) |
| Scheme | Marks |
|---|---|
| M1 | |
| \(3 \leqslant x \lt 9\) | A1 |
| (2) | |
| (8 marks) |
Notes
M1: For \(x \geqslant 3\) or \(x \lt 9\) or \(3 \lt x \leqslant 9\)
A1: Accept [3, 9) or \(9 \gt x \geqslant 3\)