Question

срочно!!!!!!!!!!!!!!!!​

Answer 1

$\dfrac{t^2}{15a+t}-\dfrac{225a^2}{15a+t}=\dfrac{t^2-(15a)^2}{15a+t}=\dfrac{(t-15a)(t+15a)}{15a+t}=t-15a.$

Answer 2

Ответ:

$t - 15$

t-15