| Exam Board | Edexcel |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Topic | Indices and Surds |
| Type | Evaluate numerical powers |
| Difficulty | Easy -1.8 This is a straightforward recall question on basic index laws requiring minimal steps. Part (a) is trivial (reciprocal), and part (b) involves standard manipulation of fractional negative indices with no problem-solving element—well below average difficulty for A-level. |
| Spec | 1.02a Indices: laws of indices for rational exponents |
\begin{enumerate}[label=(\alph*)]
\item Write down the value of $8^{-1}$. [1]
\item Find the value of $8^{-\frac{2}{3}}$. [2]
\end{enumerate}
\hfill \mbox{\textit{Edexcel C1 Q1 [3]}}