Question 23
If $$
\begin{aligned} x&=\frac{-1+i\sqrt3}{2},\\ y&=\frac{-1-i\sqrt3}{2}, \end{aligned}
$$ where $i^2=-1,$ then which of the following is not correct?
\begin{aligned} x&=\frac{-1+i\sqrt3}{2},\\ y&=\frac{-1-i\sqrt3}{2}, \end{aligned}
$$ where $i^2=-1,$ then which of the following is not correct?