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Find the Cube-root of -2744000 - Mathematics

Sum

Find the cube-root of -2744000

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Solution

-2744000
= `root(3)(-2744000)`

2 2744000
2 1372000
2 686000
7 343000
7 49000
7 7000
10 1000
10 100
10 10
  1

 

 

 

 

 

 

 

 

 

 

= `sqrt(-2 xx -2 xx -2 xx -7 xx -7 xx -7 xx -10 xx -10 xx -10)`
= -2 x -7 x -10
= -140

  Is there an error in this question or solution?
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 4 Cubes and Cube Roots
Exercise 4 (B) | Q 3.9 | Page 51
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