a)\left\{\begin{matrix} 3x^{2}y^{2}-xy^{2}-xy=2 & \\ x^{2}y^{2}+xy^{2}+xy-y^{2}-2y=2 & \end{matrix}\right.
b)\left\{\begin{matrix} x^{2}+2xy+3=6y\\ 3x+xy+1=5y \end{matrix}\right.
c)\left\{\begin{matrix} x^{3}-2x^{2}y-4x=y^{3}-2xy^{2}-4y\\x^{3}+2y^{3}=4x+3y \end{matrix}\right.
d)\begin{bmatrix}...