Предмет: Алгебра, автор: polina3725

помогите на листике пожалуйста

Приложения:

Ответы

Автор ответа: residbaxisov999
0

(а* b)*2=28

a+b=28×2=14

x=14-y

(14 – у) * у = 40;

14у – у2 - 40 = 0;

 – у2 + 14у - 40 = 0;

D = 142 – 4 * (-1) * (-40) = 196 – 160 = 36;

х1= (-14 + √36)/(2 * (-1)) = (-14 + 6)/(-2) = -8/(-2) = 4;

х2= (-14 - √36)/(2 * (-1)) = (-14 - 6)/(-2) = -20/(-2) = 10.

у1 = 14 – 4 = 10;

у2 = 14 – 10 = 4.

Ответ;4м,10м,4м,10

Похожие вопросы
Предмет: Математика, автор: Wensday12
Предмет: Английский язык, автор: raven888
СРОЧНО ПРОШУ
Choose the right variant to fill in the blank.

advertisement advertise advertised
1. Does ______________ on television influence consumers' buying habits?
2. Our students decided that they would ______________ the Khazar University students' club.


development develop undeveloped
1. The transportation of goods on the Caspian sea helps to ______________ the Absheron territory.
2. Most ______________ countries try to improve their industry.

Prosperity prosper prosperous
1. There are a lot of factors, which are responsible for the ________________ of a society.
2. We try to do our best to ______________ our country.

Benefit beneficial beneficent
1. If you help old people visit them or just talk to them, you can make a great __________________.
2. The contract we signed yesterday was _______________ .



Tradition n; traditional adjective; traditionally adv.
1. By ____________people play jokes on 1 April.
2. In England, turkey is ____________eaten on Christmas Day.
3. I saw them in their ___________costumes.


Strength n; strong adjective; strongly adv; strengthen v.
1. We need ___________defenses against the enemy.
2. They plan ___________the Company’s position in the market.
3. He was ____________opposed to the idea.
4. The ability to keep calm is one of her many ___________.


Deeply adv; deep adjective; deepen v; deepness n.
1. They were surprised seeing the ___________of the pool.
2. The things Tom needed most ___________in his life was love and respect.
3. It is one of the ___________rivers of the country.

Provide v; provider n; provision n.
1. The government is responsible for the ___________of health care.
2. The eldest son is the family’s only ____________.
3. This book will ___________you with all tree information you need.