Question

Прикрепите деталь.
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Answer 1

Ответ:

$= = = = = = = = = = = = =$

Answer 2

Ответ:

$\frac{a {}^{3} - 3a {}^{2} }{a {}^{2} - 9 } = \frac{a {}^{2} (a - 3)}{(a - 3)(a + 3)} = \frac{a {}^{2} }{a + 3}$