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	Các bình luận về: Có bao nhiêu số nguyên \(y\) sao cho tồn tại \(x \in \left( {\frac{1}{2} ; 5} \right)\) thỏa mãn \({8^{2{x^2} + xy}} = \left( {1 + xy} \right){.8^{4x}}\)?	</title>
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