What is 7x sqaured =-21

Pau C asked Apr 15, 2023

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27 votes

Pau C asked Apr 15, 2023

by Pau C

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18 votes

we need to clear x

$\begin{gathered} x^2=(-21)/(7) \\ x^2=-3 \end{gathered}$

we can't have a square root of a negative number in real numbers, if we use complex numbers we can obtain the next values for x

$x=\pm i\sqrt[]{3}$

JochenJung answered Apr 20, 2023

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