Foundation November 2022 Paper 1 Q21
21 Simplify \(\quad (2^{-5} \times 2^8)^2\)
Give your answer as a power of 2 (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| \(2^6\) | M1 | for the start of a method of simplification, eg \(2^{-5+8}\ (= 2^3)\) or \(2^{-5 \times 2}\ (= 2^{-10})\) or \(2^{8 \times 2}\ (= 2^{16})\) |
| A1 | cao SC B1 for answer of 64 or \(8^2\) or \(4^3\) if M0 scored. |