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hothihuong.06051984
2 năm trước
Tìm giá trị lớn nhất,giá trị nhỏ nhất a)A=x^2+4x+6/x^2+3 b)B=x^2+2x+6/x^2-2x+1 c)C=x^2/x^2-5x+7 d)D=4x+3/x^2+1 f)F=2x+1/x^2+2 g)G=3x^3-2x+3/x^2+1
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