Найди корни уравнения (2,5y-4)(6y+1,8)=0.

\[(2,5y - 4)(6y + 1,8) = 0\]

\[1)\ 2,5y - 4 = 0\]

\[2,5y = 4\]

\[y = 4\ :2,5\]

\[y = 1,6\]

\[2)\ 6y + 1,8 = 0\]

\[6y = - 1,8\]

\[y = - 1,8\ :6\]

\[y = - 0,3\]

\[Ответ:y = - 0,3;1,6.\]