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tuphuongthao


1. )[TEX]log_2(x^2 + x + 1) + log_2( x^2 - x + 1) = log_2(x^4 + x^2 + 1) + log_2(x^4 - x^2 + 1) [/TEX]
2.)[TEX]x^2 - (3 - 2^x)x + 2(1- 2^x) = 0[/TEX]
2.)[TEX]x^2 - (3 - 2^x)x + 2(1- 2^x) = 0[/TEX]
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