Giải hệ phương trình\(\left\{{}\begin{matrix}x-\sqrt{3y+1}=2\\\sqrt{3y+1}+4=3\sqrt{\left(x-2y\right)\left(y+1\right)}\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\sqrt{x+y}=2+\sqrt{x-y}\\\sqrt{x^2+y^2+1}-\sqrt{x^2-y^2}=3\end{matrix}\right.\)
Giải hpt:
\(\left\{{}\begin{matrix}\sqrt{x^2+3}+2\sqrt{x}=3+\sqrt{y}\\\sqrt{y^2+3}+2\sqrt{y}=3+\sqrt{x}\end{matrix}\right.\)
Giải hệ PT: \(\left\{{}\begin{matrix}x+\sqrt{\left(x+1\right)y}=2y-1\\\sqrt{2x+3}+\sqrt{y}=x^2-y\end{matrix}\right.\)
\(\left\{{}\begin{matrix}x\left(x+21\right)+y\left(x-33\right)=2\left(y^2+50\right)\\\sqrt{x+2}+2\sqrt{y+11}=\sqrt{\left(4y-x+14\right)^3}\end{matrix}\right.\)
Giải hệ phương trình \(\left\{{}\begin{matrix}\left(x^2+y^2\right)\left(x+y\right)=x+y-2xy\\x^2+11x+6=2\sqrt{9y-5}+\sqrt{x+y}\end{matrix}\right.\)
\(\left\{{}\begin{matrix}2y^3+y+2x\sqrt{1-x}=3\sqrt{1-x}\\y+\sqrt{2y^2+1}=4\sqrt{x+4}\end{matrix}\right.\)
Giải hệ phương trình :
\(\left\{{}\begin{matrix}\sqrt{3+2x^2y-x^4y^2}+x^4\left(1-2x^2\right)=y^2\\1+\sqrt{1+\left(x-y\right)^2}=x^3\left(x^3-x+2y^2\right)\end{matrix}\right.\)
cho x,y,z nguyen duong thoa man: \(\left\{{}\begin{matrix}\left|x-2y\right|\le\dfrac{1}{\sqrt{x}}\\\left|y-2x\right|\le\dfrac{1}{\sqrt{y}}\end{matrix}\right.\)
tim Max \(A=x^2+2y^2\)