Укажите область определения функции
A)y=(5-2x)/2 x∈R b)y=2/(5-2x) 5-2x≠0 x≠5/2 x∈(-∞;5/2)U(5/2;∞) c)y=5x²/(5-2|x|) 5-2|x|≠0 5-2x≠0 and 5+2x≠0 x≠-5/2 and x≠5/2 x∈(-∞;-5/2)U(-5/2;5/2)U(5/2;∞)