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	Các bình luận về: Với mọi \(x,y &#062; 0\) thỏa mãn \({4^{xy + y &#8211; 5}} + {3^{x + 1 &#8211; 2y}} + \left( {x &#8211; 1} \right)\left( {y + 1} \right) = \frac{{81}}{{{3^{\left( {x + 1} \right)y &#8211; 1}}}} + \frac{1}{{{4^{x + 1 &#8211; 2y}}}} + 3\). Giá trị lớn nhất của biểu thức \(P = 2x + 3y\) thuộc khoảng nào sau đây?	</title>
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