a. $\left\{\begin{matrix} \sqrt{x}+\sqrt[4]{32-x}-y^{2}=-3 & \\ \sqrt{32-x}+\sqrt[4]{2x}+6y=24& \end{matrix}\right.$
b. $\left\{\begin{matrix} \sqrt{2x} +2.\sqrt[4]{6-x}-y^{2}=2\sqrt{2}& \\ 2.\sqrt{6-x} +\sqrt[4]{x}+2\sqrt{2}y=8+2\sqrt{2} & \end{matrix}\right.$