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	Các bình luận về: Cho hàm số \(y = &#8211; {x^3} &#8211; m{x^2} + \left( {4m + 9} \right)x + 8\), với \(m\) là tham số. Có bao nhiêu giá trị nguyên của m để hàm số nghịch biến trên\(\left( { &#8211; \infty ; + \infty } \right)\)?	</title>
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