решите неравенство х в квадрате +х -6<0

(-3;2)(-3;2] 

Катушка индуктивностью 35 мГн включается в сеть переменного тока с частотой 60 Гц и 240 Гц. Определите сопротивление катушки.

Помогите пожалуйста!:С
Сделать одно предложение вместо двух, используя "when" or "after"

1.Joe did all the shopping.Then he went to the cafe for a cup of coffee.

2.Max looked through the three dictionaries he had.Then he found the word he as looking for.

3.Ron wtore three letters.Then he posted them.

4.Jane told her granny about everything.Then she felt much happier.

5.Bill finished learning the sonnet by heart.Then he watched television for an hour or so.

6.Edward bought Christmas presents for everyone in his family.Then he bought a camera for himself as well.

Какие меры были предприняты Николаем | для укрепления самодержавия?