Вопрос:

Ответ:

\[y = \frac{x^{4} - 9x^{2}}{(3 + x)(3 - x)} =\]

\[= \frac{x²(x^{2} - 9)}{- (x^{2} - 9)}\ \ \ \ \ \ \ \ \ \ x \neq \pm 3\ \]

\[y = - x²\]

\[x\] \[0\] \[- 2\] \[- 1\] \[2\] \[1\]
\[y\] \[0\] \[- 4\] \[- 1\] \[- 4\] \[- 1\]