Please could someone explain surds to me?

  • 0 votes

Unit 2 mathematics. It would really help as my revision guide is hard to understand!

Posted Mon 21st May, 2012 @ 19:41 by Beth Ackers

8 Answers

  • 1 vote

http://getrevising.co.uk/resources/surds7 there you go, i made some notes for you :)

Answered Mon 21st May, 2012 @ 22:09 by Hummi C
  • 1 vote

Surds are irrational numbers eg √2

 

To add surds the number under the root has to be the same

Eg. √2 + 3√2 = 4√2. So you wouldn’t be able to a 4√2 to 3√3.

 

To times surds you just times the numbers under the root.

Eg. √3 x √2 = √6

or 2√2 x 5√7 = 10√14

Answered Tue 22nd May, 2012 @ 12:04 by Sophie
  • 0 votes

Are we talking about GCSE level or A level?

Answered Mon 21st May, 2012 @ 19:44 by Hummi C
  • 0 votes

GCSE!

Answered Mon 21st May, 2012 @ 20:04 by Beth Ackers
  • 0 votes

Use this website http://www.examsolutions.co.uk/maths-revision/syllabuses/GCSE/period-1/Higher/module.php#Surds

Has videos on every single mathematical topic and goes through past papers etc. Highly recommendable :)

Answered Tue 22nd May, 2012 @ 14:58 by Imogen
  • 0 votes

http://www.youtube.com/playlist?list=PLB052E16E6FB96424&feature=plcp

A set of tutorials on everything you need on surds for Unit 2 AQA higher

Answered Sat 2nd June, 2012 @ 23:39 by Mr Hegarty
  • -1 votes

Surds are basically irrational numbers like the root of 2 or pi. They are impoisible to place on a number line because we don't know exactly what they are.

So the best way to describe them rationally is in the form of roots.

Surds are square numbers which don't make a perfect square. 

hope this helps :)

Answered Mon 21st May, 2012 @ 20:36 by rhona
  • -4 votes

they are unexplainable in my opinion!

all the best though

Answered Tue 22nd May, 2012 @ 10:54 by David G Hood