Question

все на фото даю 100 балів !!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

1)

$\frac{2}{m {}^{2} - 4} + \frac{m}{ {m}^{2} - 4 } = \frac{m + 2}{ {m}^{2} - 4 } = \frac{m + 2}{(m + 2)(m - 2)} = \frac{1}{m - 2}$

Ответ: 3)

2)

$\frac{6}{4x - 5y} - \frac{3}{2x} = \frac{2x \times 6 - 3(4x - 5y)}{2x(4x - 5y)} = \\ = \frac{12x - 12x + 15y}{2x(4x - 5y)} = \frac{15y}{2x(4x - 5y)}$

Ответ: 2)

3)

$\frac{9}{ {x}^{2} - 3x} \times \frac{x - 3}{27} = \frac{x - 3}{x(x - 3) \times 3} = \frac{1}{3x}$