Easy -1.8 This is a straightforward recall question testing basic index laws with negative powers. It requires only one step: applying the rule (a/b)^(-n) = (b/a)^n, then cubing. No problem-solving or multi-step reasoning needed, making it significantly easier than average A-level questions.
Identify the expression below which is equivalent to \(\left(\frac{2x}{5}\right)^{-3}\)
Circle your answer.
[1 mark]
\(\frac{8x^3}{125}\) \quad \(\frac{125x^3}{8}\) \quad \(\frac{125}{8x^3}\) \quad \(\frac{8}{125x^3}\)
Identify the expression below which is equivalent to $\left(\frac{2x}{5}\right)^{-3}$
Circle your answer.
[1 mark]
$\frac{8x^3}{125}$ \quad $\frac{125x^3}{8}$ \quad $\frac{125}{8x^3}$ \quad $\frac{8}{125x^3}$
\hfill \mbox{\textit{AQA AS Paper 1 2023 Q2 [1]}}