Question

Помогите плиз!
Даю 20 баллов ​

Answer 1

Ответ:

$\frac{2a}{51 {x}^{6}y } \times 17 {x}^{7} y = \frac{2ax}{3} \\ \frac{5x + 10}{x - 1} \times \frac{ {x}^{2} - 1}{ {x}^{2} - 4 } = \frac{5(x + 2)}{x - 1} \times \frac{(x - 1)(x + 1)}{(x - 2)(x + 2)} = \frac{5(x + 1)}{x - 2}$