Question

Помогите плиз, срочно Найдите значения выражения

Answer 1

$\frac{(x+15)(x-15)}{(x+15)^2} = \frac{x-15}{x+15} ==\ \textgreater \ x=25 \\ \\ \frac{25-15}{25+15}= \frac{10}{40}=0.25$

Answer 2

(x+15):(x+15)²/(x-15)=(x+15)*(x-15)/(x+15)²=(x-15)/(x+15)
x=25
(25-15)/(25+15)=10/40=0,25