Ответ:
[tex]9x {}^{2} - \frac{1}{1} - 6x + 9x {}^{2} = 18x {}^{2} - 6x - 1[/tex]
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Ответ:
[tex]9x {}^{2} - \frac{1}{1} - 6x + 9x {}^{2} = 18x {}^{2} - 6x - 1[/tex]