Solve $$$\left(1 - \lambda\right) \left(3 - \lambda\right) = 0$$$ for $$$\lambda$$$

The calculator will try to solve the equation $$$\left(1 - \lambda\right) \left(3 - \lambda\right) = 0$$$ for $$$\lambda$$$ (find the real and complex roots).
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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.