tim cac so nguyen x,y sao cho
(x-3)^2+(y-7)^2+(y-7)^2=0.
(4-x)^4+/y-15/=0
(y+2)^2+/x+6/<_0
(3x-5)^2+/x+y/<_2
2.(x+3)^2+/y-1/=8
(x+2)^2+2.(3y-1)^2=57
Loga
Sinh Học lớp 12
