Question

Решите если вам не трудно буду благодарен

Answer 1

$( \frac{a}{d} - \frac{d}{a} ) \times \frac{6ad}{a - d } = \frac{ {a}^{2} - {d}^{2} }{da} \times \frac{6ad}{a - d} = \frac{(a - d) \times (a + d)}{da} \times \frac{6ad}{a - d} = {6(a+d)}$

Answer 2

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