Tutorial When is the square root positive or negative

The video tutorial explains solving quadratic equations, focusing on the equation X^2 - 4 = 0. It demonstrates how to solve it by moving terms and taking square roots, emphasizing the need to consider both positive and negative roots. However, when directly asked for the square root of 4, only the positive solution is considered. The tutorial aims to clarify these concepts for better understanding.

Explain the significance of the equation X^2 = 4 in the context of solving quadratic equations.

What does the teacher mean by saying 'we're not going to worry about both cases'?