For the mentioned quadratic equation (i.e that, which coefficient (in case root sum is equal to coefficient x = 0^{2} + px + qp which is drawn with the opposite sign and root’s product is equal to free term q: x _{1} + x_{2} = -px _{1}x_{2} = q
In case of unreduced quadratic equation x _{1} + x_{2} = -b / ax _{1}x_{2} = c / aIn order not to make calculations manually just put values of coefficients into the set out below form. |

You can use Vieta theorem for roots finding of quadratic equation. |