\[y = 2\sqrt{3x - 6} + 6x - 5\]
\[a > 0 - ветви\ вверх.\]
\[3x - 6 \geq 0\]
\[3x \geq 6\]
\[x \geq 2\]
\[D(y) = \lbrack 2; + \infty).\]
\[y(2) = 2 \cdot \sqrt{3 \cdot 2 - 6} + 6 \cdot 2 - 5 = 7.\]
\[E(y) = \lbrack 7; + \infty).\]