Предмет: Алгебра, автор: chatskayaan

решить квадратное уравнение x^2+x+3=0

Ответы

Автор ответа: wieslawlozickip5w1nd
0

Ответ:

Объяснение:

x²+x+3=0

Δ=1-12=-11

корней нет , дискриминант меньше нуля

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PART

A

ELEMENTARY

TEST - 1

21. This

my friend. A) are / His B) Is/ My

name's Richard. C) Is/His D) his/His

-Verb to be: am/is/are

-Possessive adjectives: my, your, his, her Subject Pronouns - Plural nouns & Numbers

22. They Lisa and Max. They from the USA.

A) is / is

B) are / is C) are / are D) is / is

23. "What is

A) his

name?" "My name's Carlos."

B) her

C) your

D) my

1. A Hello, what

A) is

B) are

your name?

C) am

D) be

24. This is my sister. name is Laura.

A) His B) My C) Her D) Its

2.

name is John. And my

A) Your/sumame C) I/sumame

is Johnson B) My/sumame D) 1/name

brother.

25. I have

A) an/His

name is David

C) a/His

B) a/Her

D)/His

3. My name is Lisa.. A) My am B) is

Lisa Peterson.

C) I am

D) I 4. name is Apple. Ann Apple.

26. Hello! My

Maria. I

A) name is / from am

C) name is/ am from

Mexico.

B) is name/from am

D) name am/Is from

A) His / She B) His/He's C) Her / She's D) His/His 5. "Where John from?" from the US.

sister?

A) is / He's B) Is/His C) am/He's D) is / She's

27. Is Catherine A) he

B) you

C) your

D) yours

6. are you from? Japan. A) What B) Who

28. We A) are a students. B) is གླུ་ལ་ཉིན སྐ

C) are

D) am

C) Where

D) When

7. Where A) is/ from you ? B) are / In C) are / Is D) are / from

29. I student. A) Is/an B) am/

C) am / a

D) am/the

8.

from Spain. I'm Rodriguez.

A) I'm 9. Pierre is a French boy..

B) He's

C) You're

30. She

Italy.

A) are from B) is at

D) She's

C) is from

D) am from

A) He's/France from

C) His / France

B) His's/French D) He / France

31. He is A) a teacher. B) an

C)

D) the

32. I live

a house

B) in /in

Los Angeles.

C) in /

A) */ in

D) at /in

10. Lisa and Max are Americans.

A) There

B) Their

from U.S.A.

C) They're D) Their re

33, is your phone number?" "It's 2229

11. "What their "Alexander and Phillip."

A) are/name B) is/name

A) Where B) How C) What

D) Who

C) Is/names

D) are / names

12. 1 22 years old, but Andrew 20. A) am/am B) are / am C) am/Is D) are / are

34. are you?" "I'm Alex." A) Which B) How C) What

D) Who

13. Mark

A) is/are

19, but Brian and Denis. 26 and 28.

B) are / is C) are / are D) am/ are

English?

35. What's this

A)

B) in

C) at

D) on

14. "What "It's

A) are/a this?" umbrella. B) is/a C) is/ an D) its/an

36. Champaigne is A) a French drink. B) the C) an

D)

15. Oxford is. A) an

English university.

B) the

Ca

37. Oxford is A) a English university. B) an C) the

Dj.

D)

16. Toyotas: A) is a/car Japanese B) is/car C) are/cars D) is/cars

38. A Mercedes is German car. B) an A) a C) the

D)

17. "What is "She is a bank manager." A) his job B)she job C) he job D) her job

39. English is International language.

A) a

B) an

C) the

D)

40. Milan is A) a Italian city. B) an C) the

D)

18. 0/2/11/18/20 Find the correct alternative.

A) oh/twelve/eighteen / twenty

B) zero / two/one-one/eighteen / twenty

C) zero / two / eleven / eighteen / twenty

D) zero / two / eleven/ eighty / twenty

41. A JVC is. A) a Japanese camera.. C) the B) an

D)

42. I have two

A) sister B) sisters C) à sister D) sister's 43. It's A) a Spanish orange. C) the D)

19. "How old is your aunt?" is 29,"

A) She

B) He

C) She's

D) He's

B) an

20. "Where "She she from?" from Japan." B) is/is

A) are / is

C) is / am

D) are / are

44. It's. A) a

green apple. B) an

C) the

D)

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