1)а(3а в 2 степени -4в)+в(4а-а во 2 степени) 2)с (с в 4 степени -с в 3 степени+с во 2 степени)-(с в 4 степени- с в 3 степени + с во 2 степени)

1) The compromise is felt to be not easy to achieve.2) The ecologists were supposed to discuss a number of serious problems.3) The minister is reported to be taking part in in the talks.4) The place is thought to be popular with holidaymakers.5) The situation in the south of the country was declared to be dangerous.6) The conference is agreed to begin at eleven.7) The book is believed to be selling well.8) The government spokesman is believed not to arrive on time.9) The roads are found to be too busy at this hour.10) The article is hoped to appear in April.11) The term "collider" is said to be often used in physics nowadays.12) Rose is believed to live in St Petersburg.13) Alice is believed to like being close to nature and far from civilization.Не уверен, что всё правильно, но я не знаю как по-другому.

2) или так (с⁴-с³+с²)(с-1)