(x+7)^2 - (x-5)*(x+19) = x^2 + 14x + 49 - (x^2 + 14x - 95)= x^2 + 14x + 49 - x^2 - 14x + 95= 49 + 95= 144
Ответ: 144.
(x+7)^2 - (x-5)*(x+19) = x^2 + 14x + 49 - (x^2 + 14x - 95)
= x^2 + 14x + 49 - x^2 - 14x + 95
= 49 + 95
= 144
Ответ: 144.