Найдите наибольший отрицательный корень уравнения. cos (x+П\12) = √2\2

спиши пары слов,указав синонимы буквой с,а антонимы буквой а.  Луна-месяц,Мир-ссора,буря-ураган,зима-лето,отважый-трусливый.

проверьте на ошибки

I believe that people need robots. They will do all the human work, thus making our lives better.

1)I have a robot, his name is  Bender.

2) Bender is 6 years .

 3)He is able to: talk, walk, fly, swim under water, jumpand much more.

4) My parents bought Bender as a bodyguard and butler.

5)He perfectly copes with responsibilities at home like cooking, washing dishes, washing clothes, vacuuming the flat making repairs, caring for animals, helping me with homework, going shopping.

6) For 6 years we have become close friends.

7) My robot is very humane, obedient, caring.

8) Bender is easy to use. It is switched with the button, which is located in his neck.

9) Bender does not differ in appearance from the other robots. It is made of metal. Growth together with antenna is 6 feet. Weight is 525 pounds. He works thanks to its microcheaps and cables.

10) I am happy that I have such a robot

Выражение (m^2+9m)+18(m^2+9m)+81 надо представить в виде произведения числа и квадрата многочлена. Пжл помогите.