M
mavuongtoanlihoa


Giải hệ pt:
[tex]\left\{ \begin{array}{l} X^2 (Y+1) (X^2 + XY +1)= 3X^2 - 4X +1\\ (XY + X +1)= X^2 \end{array} \right.[/tex]
[tex]\left\{ \begin{array}{l} X^2 (Y+1) (X^2 + XY +1)= 3X^2 - 4X +1\\ (XY + X +1)= X^2 \end{array} \right.[/tex]
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