Question

Очень срочно! Fill in the gaps with the correct form of the verbs in brackets. 1. The IT specialist ............................... (do) something to your computer while I was typing my letter yesterday. 2. Hurry up, please! Our bus ............................... (leave) in quarter an hour. 3. Don't worry, I ............................... (buy) some bread on my way home later on. 4. You'd better consult a doctor because you ............................... (suffer) from bad headaches for quite a long time. 5. I ............................... (go) to see Michael yesterday afternoon.

Answer 1

The IT specialist was doing something to your computer while I was typing my letter yesterday.

2. Hurry up, please! Our bus is leaving in quarter an hour.

3. Don't worry, I will buy some bread on my way home later on.

4. You'd better consult a doctor because you have been suffering from bad headaches for quite a long time.

5. I was going to see Michael yesterday afternoon.

Answer 2

Мы можем начать с раскрытия скобок и применения формулы квадрата бинома:

scssCopy code
(√40 + 4)^2 + (√40 - 4)^2
= (2√10)^2 + (2)^2          // раскрытие скобок
= 40 + 4                    // упрощение
= 44                        // окончательный ответ

Таким образом, значение выражения ( √40 + 4)^2 + ( √40 - 4)^2 равно 44.