Solving a factored quadratic equation using the zero product property

The video tutorial explains the zero product property, which allows solving equations by setting each factor to zero. It demonstrates solving equations step-by-step, ensuring the variable X is positive. The tutorial also introduces set notation, showing how solutions can be represented as a set.

Why is it important to ensure that X is positive when solving for X?

Describe how to express the solutions of an equation in set notation.