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	Các bình luận về:  (THPT Lương Tài 2 &#8211; Bắc Ninh &#8211; 2022) Cho hàm số\(y = f\left( x \right) = 2{x^3} + b{x^2} + cx + d\) thỏa mãn \(4b + 2c + d + 16 &#060; 0\) và \(9b &#8211; 3c + d &#062; 54\). Hàm số \(y = \left&#124; {f\left( x \right)} \right&#124;\) có tất cả bao nhiêu điểm cực trị?	</title>
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