H
hongha111


Mã:
[tex]\left\{ \begin{array}{l} (1+4^{2x-y})5^{1-2x+y} =1 + 2^{2x-y+1}\\ y^3+4x+1+ln(y^2+2x)=0 \end{array} \right.[/tex]
[tex]\left\{ \begin{array}{l} (1+4^{2x-y})5^{1-2x+y} =1 + 2^{2x-y+1}\\ y^3+4x+1+ln(y^2+2x)=0 \end{array} \right.[/tex]
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