H
heongoc_97


1.[TEX]\left\{\begin{matrix}x.log_25+log_2y=y+log_2\frac{5x}{2} & & \\x.log_520+log_5x=y+log_5\frac{2y}{5}& & \end{matrix}\right.[/TEX]
2.[TEX]\left\{\begin{matrix}2.\sqrt{2x+y}=3-2x-y& & \\ \sqrt[3]{x+6}=4-\sqrt{1-y} & & \end{matrix}\right.[/TEX]
2.[TEX]\left\{\begin{matrix}2.\sqrt{2x+y}=3-2x-y& & \\ \sqrt[3]{x+6}=4-\sqrt{1-y} & & \end{matrix}\right.[/TEX]