giải pt

H

hn3

$\sqrt{x+2\sqrt{3}}=\sqrt{y}+\sqrt{z}$

<=> $x+2\sqrt{3}=y+z+2\sqrt{yz}$

<=> $\begin{cases} x=y+z \\ yz=3 \end{cases}$

yz=3 ==> y=3 , z=1 hoặc y=1 , z=3

==> x b-(
 
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