У дужках після виділених іменників скорочено познач відмінок.;КАЛИНИ,БУЗКУ,ВЕРБОЮ.

1) 4x^2= 6,25;

2)x^2 - x - 90 =0;

3) 2x^2 - 5x = 0;

4) 4x^2 - x - 3 = 0

5) 11x = 7x^2 Помогите плз , завтра контрольная, я немного пропустил( и нада срочна решыть Заранее благодарен.

Квадратные равнения

Complete the sentences with the Present Simple or Past Simple passive.

Colds are spread (spread) by sneezing.

Vitamin C  ------ (discover) in 1747.

Toothbrushes ------- (invent) by the Chinese.

The people --------- (not take) to hospital after the accident.

A new medical centre ------ (open) in my town last year.

A lot of remedies ----- (make) from plants.

I ------ (not give) any medicine at the hospital.

My teeth ----- (check) twice a year.

Vaccinations ---- (not develop) until the 18th century.

I called for an ambulance but it ------ (not need).