- 26 Tháng tám 2020
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- THCS Chu Văn An


1/ [tex]\left\{\begin{matrix} \sqrt{x^2+2y+3}+2y-3=0\\ 2(2y^3+x^3)+3y(x+1)^2+6x(x+1)+2=0 \end{matrix}\right.[/tex]
2/[tex]\left\{\begin{matrix} 5y-4xy^2+3x^2 y^2=2(x+x^2y)\\ 2x^2=x^2 y^2+1 \end{matrix}\right.[/tex]
2/[tex]\left\{\begin{matrix} 5y-4xy^2+3x^2 y^2=2(x+x^2y)\\ 2x^2=x^2 y^2+1 \end{matrix}\right.[/tex]