Explain the fallacy -1 = i i = -1 -1 = (-1) (-1) = 1 = 1.

MATHEMATICS · Subjective · CBSE · Mathematics · Complex Numbers and Quadratic Equations · Complex Numbers and Quadratic Equations

Problem

Explain the fallacy −1=i×i=−1×−1=(−1)×(−1)=1=1.-1 = i \times i = \sqrt{-1} \times \sqrt{-1} = \sqrt{(-1) \times (-1)} = \sqrt{1} = 1.

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