Быстрый ответ
x1 = -re(acos(-2)) + 2*pi - i*im(acos(-2)) x2 = re(acos(-2)) + i*im(acos(-2))
x1 = -re(acos(-2)) + 2*pi - I*im(acos(-2)) x2 = I*im(acos(-2)) + re(acos(-2))
$$x_{1} = - \Re{\left(\operatorname{acos}{\left (-2 \right )}\right)} + 2 \pi - i \Im{\left(\operatorname{acos}{\left (-2 \right )}\right)}$$<br><br>$$x_{2} = \Re{\left(\operatorname{acos}{\left (-2 \right )}\right)} + i \Im{\left(\operatorname{acos}{\left (-2 \right )}\right)}$$