N
nguyentunlamls


[tex]\left\{ \begin{array}{l} 2x^2.y+y^3=2x^4+x^6 \\ (x+2).sqrt(y+1)=(x+1)^2 \end{array} \right.[/tex]
[tex]\left\{ \begin{array}{l} x.sqrt(x)-8.sqrt(y)=sqrt(x)+y.sqrt(y) \\ x-y=sqrt(5) \end{array} \right.[/tex]
[tex]\left\{ \begin{array}{l} x.sqrt(x)-8.sqrt(y)=sqrt(x)+y.sqrt(y) \\ x-y=sqrt(5) \end{array} \right.[/tex]