10.48 The sum of two roots of the equation $x^{3}-3 x^{2}+4 x+\lambda=0$ is 2. Find $\lambda$ and solve this equation.
10.48 Hint. Use the fact that $x_{1}+x_{2}+x_{3}=3$.

Answer: $\lambda=-2, x_{1}=1, x_{2,3}=1 \pm i$.