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Evaluate of the following 3 √ 1000 + 3 √ 0 . 008 − 3 √ 0 . 125 - Mathematics

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Question

Evaluate of the following

\[\sqrt[3]{1000} + \sqrt[3]{0 . 008} - \sqrt[3]{0 . 125}\]

Sum

Solution

To evaluate the value of the given expression, we need to proceed as follows: 

\[\sqrt[3]{1000} + \sqrt[3]{0 . 008} - \sqrt[3]{0 . 125} = \sqrt[3]{10 \times 10 \times 10} + \sqrt[3]{\frac{8}{1000}} - \sqrt[3]{\frac{125}{1000}}\]

\[= \sqrt[3]{10 \times 10 \times 10} + \frac{\sqrt[3]{8}}{\sqrt[3]{1000}} - \frac{\sqrt[3]{125}}{\sqrt[3]{1000}}\]

\[= \sqrt[3]{10 \times 10 \times 10} + \frac{\sqrt[3]{2^3}}{\sqrt[3]{1000}} - \frac{\sqrt[3]{5^3}}{\sqrt[3]{1000}}\]

\[ = 10 + \frac{2}{10} - \frac{5}{10}\]

\[ = 10 + 0 . 2 - 0 . 5\]

\[ = 9 . 7\]

Thus, the answer is 9.7.

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Chapter 4: Cubes and Cube Roots - Exercise 4.4 [Page 30]

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RD Sharma Mathematics [English] Class 8
Chapter 4 Cubes and Cube Roots
Exercise 4.4 | Q 7.2 | Page 30

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