Foundation June 2018 Paper 2R Q21
21
(a) Simplify \(g^7 \times g^3\) (1)
(b) Simplify \((k^3)^5\) (1)
(c) Simplify fully \(\dfrac{20x^2y^6}{4x^2y^2}\) (2)
(d) Make \(e\) the subject of the formula \(h = 3e + f\) (2)
| Scheme | Marks |
|---|---|
| \(g^{10}\) | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| \(k^{15}\) | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| \(5y^4\) | B2 |
| (2) |
Notes
B2: B1 for fully simplifying terms in \(x\) or terms in \(y\)
| Scheme | Marks |
|---|---|
| \(h - f = 3e\) or \(\dfrac{h}{3} = e + \dfrac{f}{3}\) or \(\dfrac{h - f}{3}\) | M1 |
| \(e = \dfrac{h - f}{3}\) | A1 |
| (2) | |
| (6 marks) |
Notes
A1: oe, accept \(e = \dfrac{f - h}{-3}\)