H
hanoi05


BAI TAP: Tim gia tri nho nhat cua bieu thuc:
[TEX]A= \sqrt{9x^2- 6x+1}+\sqrt{25-30x+9x^2}[/TEX]
[TEX]A= \sqrt{9x^2- 6x+1}+\sqrt{25-30x+9x^2}[/TEX]
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