Solve $$$\left(1 - \lambda\right) \left(3 - \lambda\right) = 0$$$ for $$$\lambda$$$
Your Input
Solve the equation $$$\left(1 - \lambda\right) \left(3 - \lambda\right) = 0$$$ for $$$\lambda$$$.
Answer
Real roots
$$$\lambda = 1$$$A
$$$\lambda = 3$$$A
Complex roots
It seems that there are no complex roots.