Решите уравнение: 3x^2+5x=0.

\[3x^{2} + 5x = 0\]

\[3x\left( x + \frac{5}{3} \right) = 0\]

\[x = 0;\ \ x = - \frac{5}{3} = - 1\frac{2}{3}.\]

\[Ответ:x = - 1\frac{2}{3};\ \ x = 0.\]