Writing the domain of a rational function with a radical in the denominator

The video tutorial explains how to handle mathematical expressions involving radicals and denominators. It introduces two main restrictions: the expression under the radical must be non-negative, and the denominator cannot be zero. The tutorial walks through solving these restrictions, using a number line to illustrate the inclusion and exclusion of values. It emphasizes the importance of understanding these restrictions to determine the domain of the expression.

What is the first restriction mentioned regarding the value of X?

What are the two main restrictions that must be considered when solving the equation?

Describe the relationship between the values of X and the radical as mentioned in the text.

Explain the significance of the denominator in the context of the restrictions discussed.

What does the teacher mean by '4 is not included' in the context of the number line?