Question

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Answer 1

Смотри . . . . . . .. .. . .. . ...

Answer 2

Ответ:

$1)\frac{ab}{ab - ab {}^{2} } = \frac{ab}{ab \times (1 - b)} = \frac{1}{1 - b} \\ 2) \frac{q {}^{2} + 2q }{ {q}^{2} + 4q + 4} = \frac{q(q + 2)}{ {(q + 2)}^{2} } = \frac{q}{q + 2} \\ 3) \frac{b {}^{2} - b}{ab - b} = \frac{b(b - 1)}{b(a - b)} = \frac{b - 1}{a - b} \\ 4) \frac{ {m}^{2} - 4 }{m {}^{2} - 2m } = \frac{(m - 2)(m + 2)}{m(m - 2)} = \frac{m + 2}{m}$