Вопрос школьника по предмету Алгебра
преобразуйте в многочлен стандартного вида 5х^3-5(Х-3)(9+3х+х^2)
Ответ учителя по предмету Алгебра
5х³-5*(х-3)*(9+3х+х
²)
5х³-(х³-27)=5х³-х³+27=4х
³+27
Хотя не знаю, можно ли применить формулу скор. умножения, но от перемены мест слагаемых сумма не меняется. Думаю, можно.
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Нужен краткий пересказ этого текста на Английском языке,Кратко
In late February and early March, Russia celebrates
Shrovetide, the most ancient festival of the Slavonic peo ple. In the old days,
Slavs believed that the change of seasons was the struggle between Yarilo, god
of the sun, and the evil spirits of cold and darkness. People believed that
they had to help Yarilo fight against winter and bring in the spring. So, for
the whole week, ancient Russian villagers had fun and games. They went
sledging. They usually went for troika rides. They often built castles out of
ice and snow. They built a straw dummy of the Shrovetide Maid, then put it on a
sledge and pulled it around the village. On the last day of the festival, they
burnt it and chanted: “We are seeing off Shrovetide and waiting for the sun to
come! Come to us, spring, with your joy and kindness!’
The most important part of Shrovetide week was
making and eating pancakes The hot, round pancakes symbolized Yarilo. The Slavs
believed that by eating pancakes, they got the power, light and warmth of the
sun