\[\sqrt{6 - 15x} = 6\]
\[6 - 15x > 0\]
\[- 15x > - 6\]
\[15x < 6\]
\[x < 0,4.\]
\[6 - 15x = 6^{2}\]
\[6 - 15x = 36\]
\[- 15x = - 30\]
\[x = 2 > 0,4.\]
\[Ответ:нет\ корней.\]