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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 8

Which is not correct? - Mathematics

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Question

Which is not correct?

Options

  • `((-1)/4)^2` = 4−2 

  • `((-1)/4)^2 = (1/2)^4`

  • `((-1)/4)^2` = 16−1 

  • `-(1/4)^2` = 16−1 

MCQ

Solution

`-(1/4)^2` = 16−1 

Explanation;

Hint:

(−2) – 3 × (−2) – 2 = (−2) – 3 – 2 

= `(-2) - 5(-1/2)5`

= `-1/32`

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Chapter 1: Numbers - Exercise 1.6 [Page 46]

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Samacheer Kalvi Mathematics [English] Class 8 TN Board
Chapter 1 Numbers
Exercise 1.6 | Q 13 | Page 46
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