Срочно нужно пожалуйста

Решите задачу:

$\left \{ {{x+y=2} \atop {x^2+y^2=100}} \right. \; \left \{ {{(x+y)^2=4} \atop {x^2+y^2=100}} \right. \; \left \{ {{x^2+y^2=4-2xy} \atop {x^2+y^2=100}} \right. \; \left \{ {{100=4-2xy} \atop {x+y=2}} \right. \; \left \{ {{xy=-48} \atop {x+y=2}} \right. \\\\ \left \{ {{x(2-x)=-48} \atop {y=2-x}} \right. \; \; x^2-2x-48=0\\\\x_1=-6,\; \; x_2=8\\\\y_1=8\; ,\; y_2=-6\\\\Otvet:\; \; (-6,8)\; ,\; (8,-6)\; .$