В прямоугольном треугольнике ABC угол C = 90 градусов, ВС = 3 см, cos угла B = 0,6. Найдите AB и AC.

переведите в Passive пожалуйста:

1.Somebody gave me a goat for my birthday last year.

2.They had bought it from a farm down the road.

3.We keep it tied in our garden.

4.My father normally looks after it,but last week his company sent him abroad on business.

5.A few days later,our neighbour called me to the window.

6.I hadn"t  tied the goat up properly.The gout was her washing!

y = (x² - 1)(x⁴ + 2)

производную.

пожалуйста, нужно сейчас.