Let’s take –3

           Square of –3 = (–3) 2

         = –3 × –3

         = 3 × 3

         = 9

 

So, square of a number is always positive

 

And, we saw that 32 = 9

So, (–3) 2 = 3 2

 

Therefore, when we square a negative number,

the answer is same as that when we square a positive number

  1. Chapter 6 Class 8 Squares and Square Roots
  2. Concept wise
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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.