Предмет: Алгебра, автор: Jane74

Один из корней уравнения x^2+px-12=0 равен 4. Найдите p

Ответы

Автор ответа: MariePa

0

4^2+4p-12=0;
16+4p-12=0;
4+4p=0;
4p=-4;
p=-4/4=-1

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Математика, автор: oralie

684*249+7382-3229+387=?

6 лет назад

Предмет: Английский язык, автор: ruszeka

Помогите плиз у меня Соч

6 лет назад

Предмет: Английский язык, автор: kseniagrafa

1. It's better to have loved and lost than never____ at all. *

to have been loved
to love
to be loved
to have loved
2. Joan likes taking care of sick animals. She is pleased_____ this kind of work all the time. *

to do
to have been doing
to be doing
to have done
3. Greg's wife gave him a long list of things_____ at the supermarket. *

to have been bought
to have bought
to be bought
to buy
4. He suddenly awoke from his trance; there was a decision_____ . *

to have been made
to be made
to have made
to make
5. Judging from the books and papers on his desk he must_____ since they left him in the morning *

have been working
work
have worked
be working
6. There was nothing ____ , but to wait for the next train which was due at six. *

to do
to be doing
to be done
to have been doing
7.Tom had an accident because he had exceeded speed limit. He shouldn't___ so fast *

have been driving
have driven
be driving
drive
8. I am glad_____ to stay with them in their country-house. *
to invite
to have been invited
to have invited
to be invited
9. This work is easy; it may ____ by a child, if you ask me. *

have done
have been done
be done
be doing
10. Library books mustn't ____ for more than two weeks. *

keep
be keeping
have kept
be kept
11. I meant ____ a job interview for you, I am sorry I couldn't. *

to be arranged
to have been arranged
to arrange
to have arranged
12. No words can describe the fascination of the place. It must_____ . *

have seen
see
have been seen
be seen

6 лет назад

Предмет: Химия, автор: alina68

Составьте структурные формулы четырех изомеров, отвечающих формуле С9Н12 и содержащих бензольное кольцо.

9 лет назад

Предмет: Биология, автор: 5489

Какие этапы наблюдаются в клеточном цикле одноклеточных организмов?

9 лет назад