Xác định các hằng số a,b sao cho x^3+ax^2+x+b chia cho x^2-x+2 dư -2x

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The early expansion of the sugar industry was based on cane transported from two different parts of the Orient, first from India and second from the islands of the Southwest Pacific. From India, sugar cane was carried through the western regions of Asia into Arabia and later into the countries bordering on the Mediterranean. It was established in Sicily in about A.D 703 and was carried to Spain in about A.D 755. As early as A.D 1150, Spain had at least 75,000 acres of cane. During this early period sugar cane was grown largely to supply local wants. The Crusades were partly responsible for the further expansion and improvement of the sugar industry and for the interesting Europeans in the use of sugar. 1. From the passage, sugar can was first grown in_______ A. Europe B. the Orient C. Arabia D. Sicily 2. Sugar cane was first introduced into Spain in _________ A. A.D 703 B. A.D 755 C. A.D 1150 D. A.D 1419 3. One thing that caused the sugar industry to expan in Europe was___________. A. the favorable climate in the Orient C. better means of transportation B. the Crusades D. that came from the different parts of the Orient 4. In the twelfth century, most cane was grown __________. A. for exportation C. for sale in the large market cities B. for industrial uses D. for local use 5. Cane was transported ____________________. A. from the island of the Southwest Pacific, to India, to Asia and then to Spain. B. from the island of the Southwest Pacific, to the western areas of Asia and then to the countries bordering the Mediteranean. C. from India to the Southwest Pacific, to Asia, into Arabia and then to the countries bordering the Mediteranean. D. from India to Asia, into Arabia and then to the countries on the border of the Mediteranean.

I. Change the sentences into passive voice 1. She didn’t introduce me to her mother I…………………………………………………………………………… 2. The government hasn’t changed the regulation The regulation……………………………………………………………… 3. They are repairing my piano at the moment My piano……………………………………………………………………… 4. The fire destroyed many houses in my neighborhood Many houses…………………………………………………………………… 5. They will return those books to the library tomorrow Those books…………………………………………………………………… 6. Someone stole her bike last night Her bike……………………………………………………………………… 7. He was preparing the report when I came The report……………………………………………………………………………… 8. They keep those maps on the shelf for reference Those maps………………………………………………………………………… 9. The tamer ordered the lion to lie on the floor The lion……………………………………………………………………………… 10. My friends are making some phone calls in the evening Some phone calls………………………………………………………………………… 11. They make Honda cars in Japan ……………………………………………………………………………………………… 12. She has to finish her homework tonight ……………………………………………………………………………………………… 13. Bad weather has delayed Flight 202 from Miami ……………………………………………………………………………………………… 14. She told us a very interesting story last night ……………………………………………………………………………………………… 15. Bill feeds the pigs and chickens every morning ……………………………………………………………………………………………… 16. They invited a lot of people to their party last night ……………………………………………………………………………………………… 17. We found the key under the table ……………………………………………………………………………………………… 18. They haven’t used this machine for ages ……………………………………………………………………………………………… 19. Bad drivers are causing many accidents ……………………………………………………………………………………………… 20. You ought to repaint the walls …………………………………………………… #help_me_plssss