За первый час поезд прошёл 68 км,а за второй-84 км.Найди среднюю скорость поезда за это время

Punks are members of a movement among certain young people in the 1970s and 1980s.They were opposed to the values of a money-based society .Their protest was expressed in loud violent music and strange clothes. Nowadays you can also see punks in the streets of big European cities . Punks usually have pal and unhealthy look.They have brightly dyed spiky hair and a lot of tattoos and piercings. They also enjoy wearing T-shirts with aggressive slogans.Black tight trousers leather jackets and Doc Martens boots are popular with punks. Very often they customize their leather lackets with studs and safety pins. Перевевиде текст)

подскажите плиз легкий стишок на тему спряжение глаголов слова исключения))))))

Найдите для функций промежутки, на которых график обращен выпуклостью вверх: x^3/(x^2+12)