It is common that if we check the solutions of a quadratic equation, we simply substitute the solution to the original equation. But there is another method for this. In this module, you will discover the relationship of the roots and coefficients of a quadratic equation and apply this concept in checking the roots and in constructing a quadratic equation.

**LEARNING COMPETENCY**

The learners will be able to:

- describe the relationship between the coefficients and the roots of a quadratic equation.
**M9AL-Ib-4**