Question

(x^2-14x+49)/49-x^2

дробь

Answer 1

Ответ:

$\frac{x^2 - 14x + 49}{49 - x^2} = \frac{(x - 7)^2}{(x-7)(x+7)} = \frac{x - 7}{x + 7}$

Answer 2

ответ: - х-7/х+7 ..........