Question

помагите срочно!!!!!!!!
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Answer 1

$\frac{a}{a + 2} + \frac{a}{a - 2} = \frac{(a - 2) \times a + (a + 2) \times a}{(a + 2)(a - 2)} = \frac{ {a}^{2} - 2a + { a }^{2} + 2a }{(a + 2)(a - 2)} = \frac{ 2{a}^{2} }{ {a}^{2} - 4}$