Предмет: Алгебра, автор: akmgirl

25 баллов найдите значение выражения а в квадрате + 2а +1+(а+1)(1-а) при а = 0,5

Ответы

Автор ответа: colncez
2

Ответ:

a^2+2a+1+(a+1)(1-a)=a^2+2a+1+1-a^2=2a+2

при a=0.5      2*0,5+2=1+2=3

Объяснение:

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: dhgukd
Переведите пожалуйста,сроооочно,все желательно

The Snake

Snakes are born under the sign of wisdom. Their minds are active and they are always planning things, or thinking deeply about how to make the most out of life. Snakes are often very good with money and spend it wisely.


The Horse

Horses are charming, popular animals that like going to parties (probably with Rats). They like to be the centre of attention and enjoy bossing people about. They also have a fiery temper and are not very good at keeping secrets.


The Goat

You enjoy beautiful things in life, but you're not fussy about the way you live. People born under this sign like to be very relaxed and do not like strict rules and timetables. They prefer to work in a team and like leaving any decision-making to other people.


The Monkey

Those born in the year of the Monkey are very imaginative. Just like the real animals, Monkeys want to know about everything that's going on around them. They also like being helpful and ready to offer advice to their friends and family.


The Rooster

The Rooster has a bright and lively personality. They are intelligent; enjoy reading, talking and telling jokes. They are also very organised. So they often like to plan whatever they are doing weeks and weeks in advance.


The Dog

Just like our four-legged friends, Dogs are very loyal. They have firm views on things and they are interested in green issues. They hate unfair treatment of anyone and they are always ready to give advice.
2 года назад
Предмет: Другие предметы, автор: AbakumenkoNataliya
проект для третьего класса про кварц
2 года назад
Предмет: Українська мова, автор: iulya383
фразеологізм на слово дуже щасливий з числівником
2 года назад
Предмет: Українська мова, автор: Tokarchuk
Крым я хочу стать 10 речнь
9 лет назад
Предмет: Математика, автор: Anonymus5
Два мальчика идут навстречу друг другу. Сейчас между ними 12 км. Скорость одного из них составляет 2/3 скорости другого. Найдите скорость движения каждого мальчика, если известно, что они встретятся через 1,5 ч.
9 лет назад