ĐKXĐ : x> -2
\(\sqrt{2x+\sqrt{6x^2+1}}\) = x + 1
=> (\(\sqrt{2x+\sqrt{6x^2+1}}\))2 = (x+1)2
=> 2x+\(\sqrt{6x^2+1}\) = x2+2x+1
=> \(\sqrt{6x^2+1}\) = x2+1
=> 6x2 +1 = (x2+1)(x2+1)
=> 6x2 +1 = x4+2x2+1
=> -x4+4x2 = 0
=> x2(4-x2) = 0
=>x2(2-x)(2+x) = 0
=> x2 =0, 2-x=0 , 2+x =0
=> x=0(TMĐKXĐ)
x=2(TMĐKXĐ)
x= -2 (KTMĐKXĐ)
Vậy ........
\(\left[{}\begin{matrix}x=2\\x=0\end{matrix}\right.\)