phân tích đa thức P(x)=x(x+1)(4 x^2 -1)-2 thành nhân tử

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II/ Read the passage. Circle A, B, C or D to answer each question below. Lake Titicaca is on the border between Bolivia and Peru, It is 3.810 meters above sea level, It is also a deep lake, in places about 180 meters deep. This is almost a small sea. It is more than 190 kilometers wide. There are also 41 islands in the lake. The Angle Falls in Venezuela in Chile is about 1.000 kilometers high. In very hot weather, the water can evaporate before it reaches the bottom. The Atacama Desert in Chile is about 1.000 kilometers long. It is also 15 million years old. It is very dry, On average, there is 1mm of rain per year. Amazon Rainforest covers a million acres including the countries Brazil, Venezuela, Colombia, Ecuador, Peru, It produces about 20% of the planet's oxygen. More than 50% of the world's species of plans, inserts and animals live in the Amazon rainforest. 21. How many countries does the Amazon Rainforest cover? b. 6 c. 5 а. 3 22. Where is Lake Titicaca? a. Lake Titicaca is in Peru.b. It is on the border between Bolivia and Peru c. They are on the border between Bolivia and Peru d. Lake Titicaca is on the border between Bolivia, 23. How high is the Angel Falls in Venezuela? a. one thousand meters high c. five hundred meters high 24, How old is the Atacama Desert? a. There are in any flowers the park. C. Are there in the park any flowers? d. 4 b. one million meters high d. one thousand meters high b. There are any flowers in the park. d. Are there any flowers in the park?