\[(6x - 1)^{2} - (5x + 2)(6x + 5) =\]
\[= 6(x - 1)^{2} - 37x\]
\[= 6x^{2} - 12x + 6 - 37x\]
\[- 9 \neq 6\]
\[Ответ:нет\ корней.\]