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How to get the square root of-32

User Nico TeWinkel
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1 Answer

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20 votes

We know that the square root of -32 does not exist in the real number, but we can obtain the complex solution as follows:

We proceed to calculate the square root as if it were a positive value, and since we know that:


√(-1)=i

Then:


\begin{gathered} √(-32)=√(32(-1))=4√(2(-1)) \\ \\ =4√(2)√(-1)=4√(2)i \end{gathered}

User Kresimir
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