Rationalising The Denominator

The video tutorial covers the concept of surds and focuses on rationalizing the denominator. It explains why a denominator should not be irrational and demonstrates how to rationalize it by multiplying both the numerator and denominator by the square root. The tutorial includes examples, from basic to advanced, illustrating the process and techniques like the difference of squares. It emphasizes the importance of showing work in exams and provides practice problems for viewers to solve.

What happens when you multiply both the numerator and denominator by the square root?

Explain how expanding brackets helps in rationalizing the denominator.