solve x^2=y in C

The expression: $(x^2=y)$ contains several variables so we pick x for solving

Let's solve in $ℂ$: $x^2=y$

For the complex square equation $x^2=y$, the solutions are $\sqrt{y}$ and $-\sqrt{y}$. They coincide when the right-hand side is zero.

▶Solutions obtained: $x=\{-\sqrt{y},\sqrt{y}\}$