Question

(x^7-x^5)/(x^7-x^9) сократите дробь

Answer 1

$\frac{x^7-x^5}{x^7-x^9}=\frac{x^5(x^2-1)}{x^7(1-x^2)}=-\frac{x^2-1}{x^2(x^2-1)}=-\frac{1}{x^2}$