Question

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Answer 1

Ответ:
(x-6)/(x+6).
Решение:

Answer 2

$frac{2x-4}{ x^{2} +12x+36}: frac{8x-16}{ x^{2} -36}= frac{2x-4}{ x^{2} +12x+36}* frac{ x^{2} -36}{8x-16}= frac{2(x-2)}{(x+6)(x+6)}* frac{(x-6)(x+6)}{8(x-2)}= frac{x-6}{x+6}$