Question
Find the cube of: $2\frac{2}{5}$
✓
Answer
We have: $2\frac{2}{5}=\frac{12}{5}$ Also, $\because\Big(\frac{\text{m}}{\text{n}}\Big)^3=\frac{\text{m}^3}{\text{n}^3}$ $\therefore\Big(\frac{12}{5}\Big)^3$ $=\Big(\frac{12^3}{5^3}\Big)$ $=\frac{12\times12\times12}{5\times5\times5}$ $=\frac{1728}{125}$
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