40 балов. Система уравнений х-4у=2 ху+2у=8

[latex] \left \{ {{x-4y=2} \atop {xy+2y=8}} \right. \\ \\ \left \{ {{x=4y+2} \atop {(4y+2)y+2y=8}} \right. \\ \\ (4y+2)y+2y=8 \\ 4y^2+2y+2y=8 \\ 4y^2+4y-8=0 \ |:4 \\ y^2+y-2=0 \\ \\ y_1=-2 \\ y_2=1 \\ \\ x=4y+2 \\ \\ x_1=4y_1+2=4*(-2)+2=-6 \\x_2=4y_2+2=4*1+2=6 \\ \\ OTBET: \ (-6;-2); \ (6;1)[/latex]