Domain of a radical with negative under the radical

The video tutorial explains how to determine the domain of a function involving a radical expression. It begins by discussing the necessity for the expression under the radical to be non-negative. The tutorial then demonstrates solving inequalities to find the domain, emphasizing the importance of flipping the inequality sign when multiplying or dividing by a negative number. Finally, it covers converting inequalities into interval notation, providing tips for those who may find the process challenging.

How can you express the solution of an inequality in interval notation?

What strategies can you use if you find a problem confusing?