Question

Обозначение символа альфа - @
([email protected][email protected])^2 - ([email protected]@)^2

Answer 1

([email protected] + [email protected])² - ([email protected] - [email protected])² = ([email protected] + [email protected] - [email protected] + [email protected])([email protected] + [email protected] + [email protected] - [email protected]) = [email protected]@ = 4
Ответ: 4