H
hoangquan_999


1. Cho x thuộc R thỏa mãn: x>1. CM:
$\dfrac{x^4+1}{x^3-x}$ \geq $2\sqrt{2}$
Chú ý gõ latex
$\dfrac{x^4+1}{x^3-x}$ \geq $2\sqrt{2}$
Chú ý gõ latex
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