$$x_{1} = \frac{5}{2} - \frac{\sqrt{21}}{2}$$
=
$$\frac{5}{2} - \frac{\sqrt{21}}{2}$$
=
0.208712152522080
$$y_{1} = \frac{\sqrt{21}}{2} + \frac{5}{2}$$
=
$$\frac{\sqrt{21}}{2} + \frac{5}{2}$$
=
4.79128784747792
$$x_{2} = \frac{\sqrt{21}}{2} + \frac{5}{2}$$
=
$$\frac{\sqrt{21}}{2} + \frac{5}{2}$$
=
4.79128784747792
$$y_{2} = \frac{5}{2} - \frac{\sqrt{21}}{2}$$
=
$$\frac{5}{2} - \frac{\sqrt{21}}{2}$$
=
0.208712152522080