Вычислите: ) во 2 степени ) в 3 степени ) в 4 степени ) в 5 степени ) во 2 степени ) во 2 степени ) во 2 степени ) во 2 степени ) в 3 степени ) в 3 степени ) в 3 степени ) в 3 степени

) во 2 степени=1

) в 3 степени =(-1)

) в 4 степени=1

) в 5 степени=(-1)

) во 2 степени=9

) во 2 степени=4

) во 2 степени=16

) во 2 степени=25

) в 3 степени=(-8)

) в 3 степени=(-27)

) в 3 степени=(-64)

) в 3   степени=(-125)

 

1) 1

2) -1

3) 1

4)-1

5) 9

6) 4

7) 16

8) 25

9)   -8

10) -27

11) -64

12) -125

1)45*3=135 (км) - проплыл катер                                                                                                 2)135-75=60 (км) - проплыл теплоход за 3 часа                                                       3)60: 3=20 (км/ч)                                                                                                                 ответ: скорость теплохода 20 км/ч

Ithink summer is the best season of all because it is warm, the nature is beautiful and we have great opportunities for rest. summer is a time of holidays. we can go anywhere, spend our time near a river or a lake on fresh, green grass, swim in warm water, or climb mountains, play different games, ride a bicycle and so on.

i spend my summer holidays at my granny’s. there are many things there to do. what i did most of the time - i swam in the sea and sunbathed. sometimes i made a fire with my friends at the seaside and cooked potatoes there. it was wonderful. we told anecdotes to each other, and did everything we wanted. i also got used to walk alone in the forest.

when august was coming to its end, i went on a small voyage by ship. the ship name was “sevastopol”.

but this summer wasn’t for me only sugar and honey. i have passed through the graduating exams after school and entering exams in the university. so the bigger part of my summer vacations i spent sitting with the books. of course, it was not interesting, but i’m glad that i did it because now i’m a student of the best university in our country.