L
linadinh2000


tim gia tri nho nhat cua
A= $\sqrt{x^2 + 2x + 5} - \sqrt{2x^2 + 4x + 3}$
Chú ý latex
A= $\sqrt{x^2 + 2x + 5} - \sqrt{2x^2 + 4x + 3}$
Chú ý latex
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