1)Решите уравнение: 9x^3-18x^2-x+2=0

2)Решите уравнение: (x^2+x)(x^2+x-5)=84

3)Решите биквадратное уравнение: 4x^2-5x^2+1=0

16y^4-8y^2+1=0

Помогите Пожалуйста решить))) Буду благодарен)

 

(Вставьте слова)

In 1985 1....... more trees in this town.

2....... here then?

No but i 3....... my cousins. They lived in a house 4........ a big park.

Is the park there now?

Yes but now it is 5.......

1 A There were      B They were     C Were there   D Were they

2 A  Was you living    B Have you lived   C Did you live    D Were you live

3 A Orten visited to     B Visited ofren to    C Often visited    D Visited often

4 A at      B besides    C near     D on

5 A more smaller    B much more small     C much smaller   D more smaller

A) Use the following words to  make up word combinations denoting some of the environmental problems of the present day.

                                                                 таблица

shortage                                              melting                            energy                    glaciers    

greenhouse                                         of water                          warming               effect

climate                                                   crisis                                acid                      change

global                                                       population                        explosion          rain            

greenhouse effect,..........................................................................

Длина прямоугольного параллелепипеда равна а см, ширина б см, и высота с см. Найдите обьем , площадь поверхности и сумму длин всех ребер этого параллелепипеда, если : а=0,67 б=0,85 с=2,52