Chapters

Introduction

Learning Objectives

Recap of past learning

Recap: Multiplying a surd by itself

Multiplying a fraction by a number which doesn't change the size of the fraction?

One can take many forms

Rationalising the denominator

Summary

Rationalising the denominator (10A)

Indices and surds (Year 10)

Year 10

This video is another in the Year 10 Advanced course looking at surds. Having looked at how to add, subtract, multiply and divide them I finish this video looks at what it means to rationalise the denominator. Convention states that we're not permitted to have a surd on the bottom of a fraction and so we use a simple, but effective, trick to help "get rid of the the surd". There are a number of examples throughout this video all explained using clear and easy to understand language.

Published: July 7, 2020

Length: 09 mins and 11 seconds

Lesson notes

Lesson notes are provided in PDF format and can be downloaded by clicking the link below:

Exam resources

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Video tags

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