ĐK: \(2x+3\ge0\Rightarrow x\ge\frac{-3}{2}\)
Pt \(\Leftrightarrow x^2+4x+5-2\sqrt{2x+3}=0\)\(\Leftrightarrow x^2+2x+1+2x+3-2\sqrt{2x+3}+1=0\)
\(\Leftrightarrow\left(x+1\right)^2+\left(\sqrt{2+3}-1\right)^2=0\)\(\Leftrightarrow\hept{\begin{cases}x+1=0\\\sqrt{2x+3}-1=0\end{cases}\Leftrightarrow\hept{\begin{cases}x=-1\left(tm\text{đ}k\right)\\2x+3=1\end{cases}}}\)
Vậy x=-1 là nghiệm của pt.