Find the Cube-root of -216 X 1728 - Mathematics

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Sum

Find the cube-root of -216 x 1728

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Solution

-216 x 1728

2 216
2 108
2 54
3 27
3 9
3 3
  1

 

 

 

 

 

 

 

 

2 1728
2 864
2 432
  216

 

 

 

 

= -(2 x 2 x 2 x 3 x 3 x 3) x (2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3)
= -2 x 3 x 2 x 2 x 3
= -72

  Is there an error in this question or solution?
Chapter 4: Cubes and Cube Roots - Exercise 4 (B) [Page 51]

APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 4 Cubes and Cube Roots
Exercise 4 (B) | Q 7.2 | Page 51
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