помогите решить уравнения через дискриминант:

а)х2+6х+4=0     б)х2+106х+693=0

 

№1 выбрать правильное

1. I no can understand

    I can't understand

2. He can drive a tractor

     He cans drive a tractor

3. Can you swim fast?

     Do you can swim fast?

4. We can to play tennis quite well

    We can play tennis quite well

5. You speak Italian very good

     You speak Italian very well

6. He plays very well the piano

    He plays the piano very well

№2 поставить в правильном порядке

1. tell, time, me, please, you, the. can?

2. party, you, can, to, come,my

3. glass, please, i, of, water, can, have, a

4. slowly, speak, more, you. please, can

5. lift, give, you, a, can, i

Помогите составить 1 предложение с каждым словам:лукавство,упрямство,коварство.

Очень срочно,пожалуйста,помогите!

Complete the sentences with the present continuous.

1. My dad .......... (paint) the house today.

2. 

A: What ........ (you/do), Sam?

B: I .... (write) an email to my friend.

3. The children ........ (not watch) TV now. They......(do) their homework.

4. 

A: ......................(John/repair) his car?

B: Yes,he is.

Решите систему уравнений: x^2-y^2=3

                                                     xy=2