In these videos I show you how the sum and product of the roots of a quadratic equation are related to the coefficients and how it is possible to build other quadratic equations based on these roots.

Sum and product of the roots of a quadratic equation

Relationship between roots and coefficients of a quadratic equation (1) : ExamSolutions Maths - youtube Video

Further examples

Relationship between roots and coefficients of a quadratic equation (2) : ExamSolutions Maths - youtube Video