Об оптимальном выборе способа решения задач

One method of optimum choice training of difficult problems solution is described. The author exemplifies the me-thod to solve a specific problem with the parameters: arrangement definition of quadratic equation roots relative to one fixed point. Along with the solution where the two well-known ways (analytic and graphic) are used, an original way of solution with the help of Vieta theorem is given as an example.