Chủ đề:
Violympic toán 8Câu hỏi:
Bài 1: giải các phương trình sau (đưa về phương trình tích)
a) ( x-6)(x+2)=0
b. X2-5x+6=0
I, Make the questions from the underlines words or phrases (điền vào dấu chấm sao cho đúng)
1. Vietnam has 54 ethnic groups
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2. Kinh people account for 87% of the country 's population
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3. The other minority groups mainly inhabit in mountain areas
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4. Among ethnic minorities the most populated groups are Tay, Thai, Mung, Hoa, Khmer, Mung,...
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5. The Vietnamese government has issued specific policies and special treatments in order to enhance the living standards of mountainous people
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6. People should make great effort to preserve traditional cultural identities of each ethnic minority group
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