какова должна быть длина математического маятника, чтобы период его колебаний совпадал с периодом колебаний груза,растягивающего пружину в состоянии покоя на h см

(х в квадрате - 2 х +1)делить (х-7) решите пожалуйста дескриминантное уровнение ) надо сегодня)

Пожалуйста,помогите перевести текст:
This sport is the national summer game of England,where it has been played for hundreds of years,possibly since the 13th century.Laws to standardise the rules of play have existed since at least the mid-18th century.During England's colonial history,it was exported around the world,and it is now played in more than 100 countries.It is particularly popular in the British Isles,Australia,New Zealand,India,Pakistan,South Africa,and the West Indies.
The game is played outdoors with bats and a ball between two teams of 11 players each.The sides take turns at batting and pitching.Two batsmen are on the playing field.Each batsman guards a series of three upright sticks called a wicket.The bowler must hit the wicket with the ball.The batsman tries to hit the ball to defend his wicket.If he hits the ball,he can begin a run to exchange places with the second batsman.Each time the batsmen switch positions,they score a run.The team with the most runs at the end of the match wins.A formal game can last from an afternoon to five days.Traditionally players wear white trousers and a white shirt and a sweater.

Какая масса фенола содержалась в растворе, если после реакции с избытком бромной воды масса осадка составила 4,5 г? Нужно полное решение. заранее спасибо!