Answer

Quadratic inequalities are used in our everyday life when we try to fit the cost of the products in our budget while still maintaining our satisfaction with them. Quadratic inequalities are also applied in situations such as putting boundaries or fences to know the possibilities within the interval of the roots to which the length and the width are adjusted for optimization.

Quadratic equations are actually used in everyday life, as when calculating areas, determining a product's profit or formulating the speed of an object. Quadratic equations refer to equations with at least one squared variable, with the most standard form being ax² + bx + c = 0.