ĐKXĐ: \(\frac{2}{3}\le x\le7\)
\(\Leftrightarrow\sqrt{3x-2}-4+1-\sqrt{7-x}+3x^2-20x+12>0\)
\(\Leftrightarrow\frac{3\left(x-6\right)}{\sqrt{3x-2}+4}+\frac{x-6}{1+\sqrt{7-x}}+\left(x-6\right)\left(3x-2\right)>0\)
\(\Leftrightarrow\left(x-6\right)\left(\frac{3}{\sqrt{3x-2}+4}+\frac{1}{1+\sqrt{7-x}}+3x-2\right)>0\)
\(\Leftrightarrow x>6\)
Vậy nghiệm của BPT đã cho là \(6< x\le7\)