4400 Higher June 2007 Paper 3 Q5
5
(a) Simplify, leaving your answers in index form,
(i) \(7^5 \times 7^3\)
(ii) \(5^9 \div 5^3\) (2)
(b) Solve \(\dfrac{2^9 \times 2^4}{2^n} = 2^8\) (2)
| Scheme | Marks |
|---|---|
| (i) Answer: \(7^8\) | B1 |
| (ii) Answer: \(5^6\) | B1 |
| (2) |
Notes
B1: cao
B1: cao
| Scheme | Marks |
|---|---|
| \(9 + 4 - n = 8\) or \(13 - n = 8\) | M1 |
| 5 | A1 |
| (2) | |
| (4 marks) |
Notes
M1: Also award for \(2^n = 2^5\) or \(2^5\) on answer line
A1: cao