Предмет: Алгебра, автор: alisa3103

упростить выражение: ( a+ 2)(a - 8) - 2a ( a - 3 )= . . .

Ответы

Автор ответа: Аноним

0

( a+ 2)(a - 8) - 2a ( a - 3 )=

= а² + 2а - 8а - 16 - 2а² + 6а =

= -а² - 16 = -(а² + 16)

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Математика, автор: Kabievzandaulet

1) 20 мен 15 2) 22 мен 35 3) 34 пен 48 4) 17 мен 20

6 лет назад

Предмет: Английский язык, автор: ffllpp

1. Kate wants to do it…

a) himself b) herself c) itself d) yourself

2. My Mom is reading a book to my little sister.

a) her b) him c) me d) us

3. What are…names? – Jack and Tom.

a) his b) their c) her d) its

4. My sister and I are twins.

a) they b) you c) we d) she

5. Three sheep … in the yard.

a) am b) was c) are d) is

6. Canada is the second … country in the world.

a) larger b) largest c) large d) small

7. Winter is … than spring.

a) cold b) warm c) colder c) warmer

8. This book is as … as that one.

a) more interesting b) the most interesting c) less interesting d) interesting

9. There … many men in the room.

a) was b) is c) am d) are

10.The mobile telephone of my father. My… mobile telephone

a) fathers’ b) father’s c) fathers d) father

11. Kate (to cook) dinner tomorrow.

a) cooks b) cook c) cooked d) will cook e) is cooking

12. She (to help) mother yesterday?

a) did … help b) did … helped c) does … help d) is … helping

13. What … your brother (to do) tomorrow?

a) does … do b) do … do c) will … do d) is … doing e) did … do

14. Kate (to cook) dinner every day.

a) cooks b) cook c) cooked d) will cook e) is cooking

15. Kate (to cook) dinner now.

a) is cooking b) cooks c) cooked d) will cook

16. You’ll be here tomorrow, …?

a) isn’t it b) won’t you c) will you d) will you be

17. Is there … in the room?

a) somebody b) something c) anybody d) anywhere

18. The telephone was… by Alexander Graham Bell.

a) discovered b) invented c) explored d)studied

19.This programme … me a lot of money.

a) cost b) costed c) had costed d) was cost

20. Nobody … why people walk or talk in their sleep.

a) know b) knows c) knew d) is knowing

6 лет назад

Предмет: Математика, автор: amina5876

Решите уравнение: 288: (х – 15)=16
пожалуйста

6 лет назад

Предмет: Алгебра, автор: DarkSky

Помогите пожалуйста решить уравнение: 2y^3-18y^2+y-9=0 (^ - степень)

10 лет назад

Предмет: Химия, автор: Тимурррр

1.Какой объем хлора требуется для реакции с 10 л водорода (H2) при образовании HCL? 2.Определите массу кремния (Si) и объем кислорода(О2),вступивших в реакцию при образовании 20 г SiO2

10 лет назад