2 câu trả lời
\[\begin{array}{l} x - 3,{4^2} = \frac{4}{9}\\ x - {\left( {\frac{{17}}{5}} \right)^2} = \frac{4}{9}\\ x - \frac{{289}}{{25}} = \frac{4}{9}\\ x\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \frac{4}{9} + \frac{{289}}{{25}}\\ x\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \frac{{2701}}{{225}}. \end{array}\]
Đáp án:
Giải thích các bước giải: \[\begin{array}{l} x - 3,{4^2} = \frac{4}{9}\\ \Leftrightarrow x - 11,56 = \frac{4}{9}\\ \Leftrightarrow x = \frac{4}{9} + 11,56\\ \Leftrightarrow x = \frac{{2701}}{{225}} \end{array}\]
