твир я и украинська мова пожалуста мне нужно до 15;00

укажите область определения функции заданной формулой

а)[tex]y= x^{2} +\sqrt{|x|-1}[/tex]

б) [tex]y= \sqrt{|2-x|-3x}[/tex]

помогите пожалуйста. и объясните)

Кто знает английский помогите решить!!

 раскройте скобки употребляя глаголы в present continuous или в present simple.

it usually (to take) me an hour to do my written exercises.

where boris (to be)?i (to look) for him. - he (to have) dinner.

i(to look) for a cassette recorder.you(to have) anything on sale?-take a look at this little sonic walk-man.-no,i (not to went) that kind.-well,this supersound might interest you.it (to be) a good size , it (to be) stereo and it ( to have) a radio to listen to the news.

i (not to know) about you,but i (to go) out to the cinema.