Помогите решить систему!!! {X^2-8y+31=0 {y^2-2x-14=0

Решите задачу:

$\left \{ {{x^2-8y+31=0} \atop {y^2-2x-14=0}} \right. \; \left \{ {{x^2=8y-31} \atop {y^2-2x-14=0}} \right. \; \left \{ {{x=\pm \sqrt{8y-31}} \atop {y^2\pm 2\sqrt{8y-31}-14=0}} \right. \\\\\pm 2\sqrt{8y-31}=14-y^2\\\\4(8y-31)=y^4-28y^2+196\\\\y^4-28y^2-32y+320=0\\\\(y-4)^2(y^2+8y+20)=0\\\\a)\; \; y-4=0\; ,\; y=4\\\\b)\; \; y^2+8y+20\ \textgreater \ 0\; ,\; t.k\; D=-16\ \textless \ 0\\\\x=\pm \sqrt{32-31}=1\\\\Otvet:\; (1,4).$