1. $\left\{\begin{matrix} x^2+y+x^3y+xy^2+xy=5 & \\ x^4+y^2+xy\left ( 1+2x \right )=5 & \end{matrix}\right.$
2. $\left\{\begin{matrix} xy+x-2=0 & \\ 2x^3-x^2y+x^2+y^2-2xy-y=0 & \end{matrix}\right.$
3. $\left\{\begin{matrix} xy+x+y=x^2-2y^2 & \\ x\sqrt{2y}-y\sqrt{x-1}=2x-2y & \end{matrix}\right.$
4. $\left\{\begin{matrix} x^3-3x^2-9x+22=y^3+3y^2-9y & \\ 2x^2+2y^2-2x+2y=1 & \end{matrix}\right.$
5. $\left\{\begin{matrix} \sqrt{x}+\sqrt{y}=4 & \\ \sqrt{x+12}+\sqrt{y+12}=8 & \end{matrix}\right.$
6. $\left\{\begin{matrix} x+y-\sqrt{xy}=3 & \\ \sqrt{x+1}+\sqrt{y+1}=4 & \end{matrix}\right.$
7. $\left\{\begin{matrix} 8x^3-y^3-3y^2=5y-4x+3 & \\ \sqrt{2x+y+5}+2x=2 & \end{matrix}\right.$
8. $\left\{\begin{matrix} x^2+2y^2=xy+2y & \\ 2x^3+3xy^2=2y^2+3x^2y & \end{matrix}\right.$
9. $\left\{\begin{matrix} x^2+y^2=xy+x+y & \\ x^3-xy^2=9x-12 & \end{matrix}\right.$
10. $\left\{\begin{matrix} \left ( \sqrt{x^2+1}+y \right )\left ( \sqrt{y^2+1}-x \right )=1 & \\ \sqrt[3]{3\left ( x^2-x+1 \right )}-\sqrt{x^3+6x-1}=y & \end{matrix}\right.$