Вопрос:

Ответ:

\[y = \sqrt{(x - 2)(x - 15)(x + 3)}\]

\[(x + 3)(x - 2)(x - 15) \geq 0\]

\[D(y) = \lbrack - 3;2\rbrack \cup \lbrack 15; + \infty).\]