Find the Cube of − 13 8 . - Mathematics

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Sum

Find the cube of \[- \frac{13}{8}\] .

 

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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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Chapter 4: Cubes and Cube Roots - Exercise 4.2 [Page 13]

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RD Sharma Class 8 Maths
Chapter 4 Cubes and Cube Roots
Exercise 4.2 | Q 4.04 | Page 13

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