T
thungan92


1/ [tex]\left\{\begin{x^2+y^2+\frac{2xy}{x+y}=1}\\\ {\sqrt{x^2+y}=x^2-y}[/tex]
2/ [tex]\left\{\begin{array}2^{3x+1}+2^{y-2}=3*2^{y+3x}\\\sqrt{3x^2+1+xy}=\sqrt{x+1}\end{array}\right.[/tex]
2/ [tex]\left\{\begin{array}2^{3x+1}+2^{y-2}=3*2^{y+3x}\\\sqrt{3x^2+1+xy}=\sqrt{x+1}\end{array}\right.[/tex]
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