Question

Сократи дробь 20 баллов

Answer 1

$\displaystyle \frac{x^2-2x}{x^3-2x^2+7x-14}=\frac{x(x-2)}{x^2(x-2)+7(x-2)}=\frac{x(x-2)}{(x-2)(x^2+7)}=\frac{x}{x^2+7}$