a, $\left \{ {{x^{2}y+2=y^{2}} \atop {xy^{2}+2=x^{2}}} \right.$
b, $\left \{ {{x^{2}+xy+y=1} \atop {x+xy+y^{2}=1}} \right.$
c, $\left \{ {{x^{3}+1=2y} \atop {y^{3}+1=2x}} \right.$
d, $\left \{ {{2x+\frac{1}{y}=\frac{3}{x}} \atop {2y+ \frac{1}{x}= \frac{3}{y}}} \right.$
Loga
Sinh Học lớp 12
