cam on cac ban nhe 

Đáy tam giác :

5/8 x 2 : 1/2 = 5/2 m

\(\left\{{}\begin{matrix}\left(3-x\right)\sqrt{2-x}=2y\sqrt{2y-1}\\\sqrt{x+2}+2\sqrt{y+2}=5\end{matrix}\right.\)

2\(2\sqrt{x^2-7x+10}=x+\sqrt{x^2-12x+20}\)

\(\left\{{}\begin{matrix}2\sqrt{x^2+5}=2\sqrt{y-1}+y^2\\2\sqrt{y^2+5}=2\sqrt{x-1}+x^2\end{matrix}\right.\)

\(\left\{{}\begin{matrix}x^{10}+x=y^{10}+y\\\sqrt{x}+2\sqrt{y}=3\end{matrix}\right.\)

\(\left\{{}\begin{matrix}x^{10}+x=y^{10}+y\\\sqrt{x}+2\sqrt{y}=3\end{matrix}\right.\)