получается делаем так:
сначала решаем уравнение как и обычно т.е. теоремой виетта или дискриминантом
х^2-4х+3=0
я решу теоремой виетта:
сумма корней равна 4
произведение 3
значит корни 1 и 3
далее:
есть такая формула разложение на множетели квадратного уравнения выглядит так: a(x-x1)(x-x2), где а-множетель перед квадратом в нашем случае это 1, х1 и х2 - корни.
подставим в неё наши корни, получим (x-1)(x-3)=0
так а теперь решим это неравенство (x-1)(x-3)> 0
методом интегралов ( тут 3 промежутка от минус бесконечности до 1 от 1 до 3 и от 3 до плюс бесконечности):
допустим х =0, подставим (0-1)(0-3)=3 знак + значит в промежутке от минус бесконечности до 1 знак +
от 1 до 3 знак -
от 3 до плюс бесконечности +
ответ: х принадлежит промежутку от минус бесконечности до 1 и от 3 до плюс бесконечности
1) I hate waiting for the bus in the rain.
2) Katya loves playing with her new kitten.
3) My father hates coming home late from work.
4) Ivan doesn’t mind cutting the grass at the family’s dacha.
5) Tatiana likes hearing the sound of thunder.
6) My grandfather enjoys making furniture out of wood.
7) Gleb is shy. I doesn’t like meeting new people.
8) Natasha likes going to the park with her family.
9) Denis hates feeling lonely. He likes being around people.
10) Do you like doing your English homework?
11) Anna likes walking in the forrest.
12) Lena likes singing in the choir.
13) I don’t mind sitting in the back of the bus.
14) Sonya loves talking to her cousin in England.
15) Evgeny hates trying on new clothes.
16) Dmitry likes sleeping in a tent.
17) The children love staying at their grandma’s house.
18) Nadia and Sasha like feeding the ducks in the pond.
19) Kirill likes getting emails from his friends.
20) I don’t mind lending money to my friends.
21) Alona likes wearing the new necklace she got for her birthday.
22) My grandpa likes giving me gifts.
23) I don’t mind leaving the party early.
24) Olga loves writing poems.
25) Yelena enjoys eating meals with her family.
Объяснение:
1) She told Mark that he should stop smoking so much
2) The policeman asked to keep the silence
3) He told her that he was going to the fish market
4) Mr. Ford said that he didn't like pork
5) Little Tim told his mother that he was sleepy
6) She said that she had lived in a big apartment
7) Nick said that he would work hard
8) They told me that they would be really happy
Объяснение: