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nhờ mọi người giúp
[TEX] \frac{3^{2-x} + 3 - 2x}{4^x-2} \geq 0[/TEX]
(3 mũ (2-x).......
[TEX] \frac{3^{2-x} + 3 - 2x}{4^x-2} \geq 0[/TEX]
(3 mũ (2-x).......
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