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mylinh090995
2 năm trước
Cho đơn thức A=5m ( x^2 y^3 ), B=-2/m x^6 y^9 trong đó m là hằng số dương. a. Hai đơn thức A và B có đồng dạng không ? b. Tính hiệu A – B c. Tính GTNN của hiệu A – B
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