Read these sentences and change them into the past perfect continuous.

Example 0.

He jumps

Answer 0.

He had been jumping

1. They act

2. He drives

3. I listen

1. They had been acting.

2. He had been driving.

3. I had been listening

Объяснение:

Думаю, что тут мои обойтись и без объяснений, но если есть во задавай ;)

4f(5)+f(-2)=-4f(-5)-f(2), так как функция нечетная.

4f(5)+f(-2)=-4f(-5)-f(2)=-4*3-2*(-8)=4