x^2+4x=5 помогите решить уравнение - №24671215

x^2+4x=5 помогите решить уравнение
- Предмет:
  Алгебра
- Автор:
  bellednhu
- 5 лет назад

Ответы 2

см фото====================
- Автор:
  elle
- 5 лет назад
- 0
x²+4x=5x²+4x-5=0D=16+20=36,√D=√36=6x1=(-4+6)/2=2/2=1x1=1x2=(-4-6)/2=-10/2=-5x2=-5Otvet: x1=1, x2=-5
- Автор:
  joecabrera
- 5 лет назад
- 0
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помогите пожалуйста.
VIII. Fill in yesterday, tomorrow, at the moment, every morning, last year
1. We went to Paris for our holidays …
2. She is going to stay at home …
3. They are walking in the garden …
4. He gets up very early …
5. They went to the cinema …
IX. Put the verbs in brackets into the present simple or present continuous.
1. David…(wash) the car at the moment.
2. My sister …(do) her homework in the evening.
3. My brother usually …(go) to the cinema at the weekend.
4. John …(tidy) his room now.
5. We usually … (wake up) at seven o’clock.
6. I …(play) computer games on Saturdays.

X. Put the verbs into the past simple.
1. I …(not/eat) breakfast this morning
2. They …(go) to the cinema last night.
3. She …(see) him in town last week.
4. My father …(buy) a new car a month ago. ve
5. We …(swim) in the sea for two hours.
6. He …(not/drive) to work yesterday.
7. Ann … (come) home late from work yesterday.

XI. Cross out the wrong verb.
e.g. Nick has/had a cold yesterday
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2. Mr. Bell wasn’t/weren’t at home last week.
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XII. Use the verbs in brackets to make questions
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XIII. Reading comprehension. Read the text.
Choose the right answer to the questions. `
Brother and Sister.
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