Ответ:

в-дь

[tex]y = 6x — x {}^{2} \\ 0 = 6x — x { }^{2} \\ 6x — x { }^{2} = 0 \\ x \times (6 — x) = 0 \\ x = 0 \\ 6 — x = 0 \\ x = 0 \\ x = 6[/tex]