ĐKXĐ: ...
\(\Leftrightarrow x^2-3x-10+3\sqrt{x^2-3x}=0\)
Đặt \(\sqrt{x^2-3x}=a\ge0\)
\(\Rightarrow a^2+3a-10=0\Rightarrow\left[{}\begin{matrix}a=2\\a=-5\left(l\right)\end{matrix}\right.\)
\(\Rightarrow\sqrt{x^2-3x}=2\Leftrightarrow x^2-3x=4\)
\(\Leftrightarrow x^2-3x-4=0\Rightarrow\left[{}\begin{matrix}x=-1\\x=4\end{matrix}\right.\)