We want answers

Level 1

Harry is in doubt whether there is an answer to this question.

The problem is as follows:

n 2 = n n^2 = n

Since there are two real answers for n, what is the square root of the negative difference between the two real solutions?

-1 1 i

Mohammad Farhat by Mohammad Farhat , 16, Singapore

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1 solution

Mohammad Farhat
Aug 9, 2018

We know that when we graph it the two answers are 0 0 and 1 1

For the negative difference, we get 0 − 1 = − 1 0-1=-1

− 1 = i \sqrt{-1} = i

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