Lancia is an italian automobile manufacturer. They had a co-operation with Saab that resulted in their Lancia Delta[?] being marketed as Saab 600 in Sweden. Saab also helped with the logistics and the model was actually better suited for colder climate and less prone to rust than other models.
The company was founded in 1906 and they was the first company to use a V6 engine in a standard production car.
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Note that when computing roots numerically, the usual form of the quadratic formula is not ideal. See Loss of ...