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longtb12
2 năm trước
Tính giá trị biệu thức: Q = 15x^4y^3z^2 : -3x^3y^3z tại x =- 2; y = -2010 ; z= 10. 4. Tìm giá trị của x để biểu thức A= x^2 + 4x +7 co1gia1 trị nhỏ nhất. last sentence thank you!!
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