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Question
Find the cube of \[- \frac{13}{8}\] .
Sum
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Solution
\[\because\] \[\left( - \frac{m}{n} \right)^3 = - \frac{m^3}{n^3}\]
\[\therefore\] \[\left( - \frac{13}{8} \right)^3 = - \left( \frac{13}{8} \right)^3 = - $\left( \frac{{13}^3}{8^3} \right)$ = - $\left( \frac{13 \times 13 \times 13}{8 \times 8 \times 8} \right)$ = - \frac{2197}{512}\]
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