Mathematics, 21.12.2020 20:40, hardwick744

I am trying to get the value of imaginary numbers. The expression is and now if I evaluate it like this,
I get -1
Again, if I evaluate it like this,
I get 1
So there are two values -1 and 1. Which one is correct? If either of these two is incorrect, why?

$i^2 = (\sqrt{-1} )^2\\= -1$
$i^2 = i \times i\\= \sqrt{-1} \times \sqrt{-1}\\= \sqrt{-1 \times -1}\\= \sqrt{1}\\= 1\\$

Answers: 2

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I am trying to get the value of imaginary numbers. The expression is and now if I evaluate it like...