» Vjetas formulas (kvadrātiskai vienādojumam)

$$ax^{2}+bx+c=a(x-x_{1})(x-x_{2})$$

\begin{align} x_{1}+x_{2}&=-\frac{b}{a}\\ \\ x_{1}\times x_{2}&=\frac{c}{a}\\ \end{align}