English revision of tenses

1. is going

2. is carrying

3. is

4.puts, is wearing

5. is taking, is raining

  1. he waked up, had already prepared the breakfast
  2. went, had invited
  3. heard, went, called
  4. started, had already learnt
  5. had already typed, crashed.
  6. arrived, had died
  7. had never thought
  8. had known, had met
  9. did not know, had told
  10. had been, began.
  1. have just finished

2. has already written

3. moved

4. was

5. have not been

6. have already traveled

7. went

8. have not bought

9. Did they spend

10. Have you ever seen

  1. welcomed, asked
  2. broke, had
  3. were swimming, were sunbathing
  4. came, looked and told
  5. were preparing, were collecting
  6. were having, were running
  7. turned, went.
  1. will start
  2. will have finished
  3. will probably assign
  4. will have corrected
  5. will certainly get
  6. will have finished
  7. will have left
  8. will start

Հանրահաշիվ 9

Ա 3x7-x2+6x

Բ 16a3+5a2

Գ 8x2-7

Դ 4x3+4x

Ե 7y² + y

Զ -5x4+4x

Է 2x⁴ + 9/2x

Ը 4n3

Ա ավագ անդամ -5, ազատ անդամ 2,

Բ ավագ անդամ, 1, ազատ անդամ 2

Գ ավագ անդամ 9, ազատ անդամ 17

Դ ազատ անդամ −1 ավագ անդամ 4

Ե ազատ անդամ -25, ավագ անդամ 1

Զ ազատ անդամ x5 ավագ անդամ x2

Ա 2x3-x2

Բ x5+x4+6x2

Գ 60x6+6x2+6x

Դ 2x5+6x4-10x3

Ե -30x7-10x2

Զ 5x9

Է 0.7x4-2.1x2

Ը 4/3x11+12x7+2x5

Թ x3+2x2-2x

Ժ 1/4x3-4x

Ա x+2

Բ x6-2x2

Գ x5(2x + 1)√2

Դ −4x2 +(7/2)x − 5/2

Ա ±1,±7

Բ ±1, ±2, ±5, ±10

Գ ±1, ±2, ±4

Դ ±1, ±2, ±4, ±8

Ե ±1, ±2, ±5, ±10, ±25, ±50

Ա -1, -3, -9

Բ -1,-3

Գ -1, -2, -5, -10

Դ -1

Ե -1,-3,-5,-15