Maths

>

A-Level

Algebra & Functions

Question

What does it mean to rationalise the denominator?

2 years ago

·

1 Reply

·

1643 views

B

Bridie Price


1 Answer

Devan-Kumar M Profile Picture
Devan-Kumar M Verified Sherpa Tutor ✓

Young experienced tutor w a unique understanding of exam specification

3 reviews

To rationalise the denominator is to remove all square root signs from the bottom of the fraction. An example would be if you had the fraction 1/sqrt(5). To rationalise this fraction, you would multiply the numerator and denominator by sqrt(5) to get sqrt(5)/5. This is rationalised as the denominator does not contain a square root sign even though the numerator does.

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.

Think you can help?

More Maths A-Level Questions
Sherpa Badge

Need an A-Level Maths tutor?

Get started with a free online introductions with an experienced and qualified online tutor on Sherpa.

Find an A-Level Maths Tutor