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linhkhi9
2 năm trước
Bài 5: Cho phân thức A=x³ + 2x^2+x/x^3-x a, Vs giá trị nào của x thì gt của phân thức đc xác định. b, Rút gọn A c, Tìm gt của x để gt của A=2 Bài 6: Cho phân thức A= x ²+4x+4/x ²-4 a, Tìm đk của x để phân thức A đc xác định. b, Rút gọn A c, Tính gt của A tại x=-3 d, Tìm các gt nguyên của x để A có gt nguyên
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The Hopi live in the northwestern part of Arizona in the United States. With modern things all around them, the Hopi keep their traditions. There are about 10,000 Hopi and they live in twelve villages in the desert. The weather is very hot in summer, but in winter it freezes. The wind blows hard. Farming is difficult. Corn is the Hopi's main food, but they plant vegetables, too. They raise sheep, goats, and cattle. They also eat hamburgers, ice cream and drink soft drinks. They live in traditional stone houses, but many of them have the telephones, radios, and television. They have horses, but they have trucks too. Kachinas are an important part of the Hopi religion. Kachinas are spirits of dead people, of rocks, plants, and animals, and of the stars. Men dress as kachinas and do religious dances. People also some make wooden kachinas. No two wooden kachinas are ever alike. The children attend school, and they also learn the Hopi language, dances, and stories. The Hopi want a comfortable, modern life, but they don't want to lose their traditions. 1. Though surrounded with modern things, the Hopi keep their traditions. A. True B. False 2. The Hopi live in the mountainous areas A. True B. False 3.The Hopi only eat corns. A. True B. False 4. They live in house made of stone. A. True B. False 5.Most wooden kachinas are all similar to each other A. True B. False

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