решите уравнение z^2-z+2.5=0

ПОСМОТРИТЕ ЕСТЬ ЛИ ОШИБКИ В ЭТИХ ТЕКСТАХ: Хиппи In The 1960s and 1970s a hippy was a person who opposed the normal standards of society. Hippies wore unusual clothes. Girls, for example, often wore Indian-style silk dresses and men and women usually had long hair. Hippies believed in peace, and one of their favorite sayings was «Make love, not war». When the hippy movement started in the US ,especially in California, young people showed their peaceful feelings by wearing flowers in their hair. For this reason, they were also called flower people Панки In 1970 times were difficult. While the hippies were talking about love and peace, punks were full of hate. They thought that normal pop music was boring and listened to aggressive music. Punks chose clothes that their parents hated. They wore ripped T-shirts, Doc Marten boots and leather jackets ,and often had brightly coloured hair. Рейверы In the late 1980s, large parties called raves started up. They usually took place in empty buildings, and could dance all night long under techno or acid music. Enthusiasts wore the daily clothes convenient to dance: free T-shirts and jeans. The rave became connected with drugs, and the police often tried to stop them.

чему равен Объем водорода, который полностью  прореагирует по уравнению реакции   2Н2 + 02 = 2Н20         с 1 моль кислорода