Ответ:
\[9x^{2} - 6x + 1 = 0\]
\[D_{1} = 9 - 9 = 0\]
\[x = \frac{3 + 0}{9} = \frac{3}{9} = \frac{1}{3}.\]
\[Ответ:x = \frac{1}{3}.\]
\[9x^{2} - 6x + 1 = 0\]
\[D_{1} = 9 - 9 = 0\]
\[x = \frac{3 + 0}{9} = \frac{3}{9} = \frac{1}{3}.\]
\[Ответ:x = \frac{1}{3}.\]