pettyboy

$2\sqrt{5-2x}+3x-5\geq \frac{13x+13}{6\sqrt{x+2}+\sqrt{7-3x}}$

$\left\{\begin{matrix} (8x-3)\sqrt{2x-1}-y-4y^{3}=0 & & \\ 4x^{2}-8x+2y^{3}+y^{2}-2y+3=0 & & \end{matrix}\right.$

$\left\{\begin{matrix} (x+y)(25-4xy)=\frac{105}{4}+4x^{2}+17y^{2} & & \\ 4x^{2}+4y^{2}+4x-4y=7 & & \end{matrix}\right.$

$\left\{\begin{matrix} 6x^{2}y+2y^3+35=0 & & \\ 5(x^{2}+y^2)+2xy+5x+13y=0 & & \end{matrix}\right.$

$$4x^{2}-8x+\sqrt{2x+3}=1$$