; General quadratic (2nd degree polynomial) formula. ; Formula for the 2 roots (solutions for x) ; of the general quadratic equation. ; a x^2 + b x + c = 0 ; The general quadratic equation. solve verify x ; Mathomatic can solve that and verify the solution: ; This is the quadratic formula. ; Use the calculate command to temporarily plug in coefficients. ; The coefficients may be any mathematical expression not containing x.