Question

Помогите пж. Даю 10 баллов.

Answer 1

А) (6х^2(1+3х^2))/12х^3 = (1+3х^2)/2х
Б) ((5у-2)(5у+2))/5(5у+2) = (5у-2)/5
В) ((3-а)(3+а))/(а+3)^2 = (3-а)/(3+а)