Finding the value to make a perfect square trinomial

The video tutorial explains how to complete the square by finding the value of C that makes a quadratic expression a perfect square trinomial. The process involves taking the middle term, dividing it by two, and then squaring it. The tutorial further explains why this method works and how to express the resulting trinomial as a binomial squared.

Why is it important to find the value of C in the context of this problem?

What does it mean to write a perfect square trinomial as a binomial squared?