# AQA AS Maths Surds and quadratic functions

HideShow resource information

- Created by: marcus
- Created on: 14-12-11 16:00

Fullscreen

**Surds**

Roots of non-square numbers are called **SURDS**.

√a x √b = √ab

√a /√b = √a /√b x √b /√b (times by denominator to get rid of root on bottom of fraction)

a√c + b√c = a+b√c

a√c - b√c = a-b√c

e.g

**√32** = √16 x √2

4 x √2

= 4√2

e.g

**2****√48 + 3****√12**

= 2√16x3 + 3√4x3

= 2x4√3 + 3x2√3

=…

## Similar Mathematics resources:

Teacher recommended

## Comments

No comments have yet been made