Square of Negative numbers

Last updated at April 16, 2024 by

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 3 2 = 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

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo