hpt

  1. kangdaniel2005

    Toán 9 GHPT [tex]\left\{\begin{matrix}3y^2+1+2y(x+1)=4y\sqrt{x^2+2y+1} \\ ... \end{matrix}\right.[/tex]

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