решите систему неравенств 2х^2+у^2=36; 8х^2+4у^2=36х

[tex]\displaystyle \left \{ {{2x^2+y^2=36} \atop {8x^2+4y^2=36x |:4}} \right. \\\\ \left \{ {{2x^2+y^2=36} \atop {2x^2+y^2=9x}} \right. \\\\36=9x\\\\x=4\\\\2*4^2+y^2=36\\\\32+y^2=36\\\\y^2=4\\\\ y=\pm 2 \\\\Otvet (4;2) (4;-2)[/tex]