surds ?? wtf

hey, havnt used education bit of the bored before sooo... :p:

my college messed up my maths timetable and so ive missed the 1st few lessons....she told me that we were learning about surds and i should catch up, so ive been on the bbc website to do revision on then but im so confused on what they are and how to do them...

can any one help me before 2moz :eek:

please

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Reply 1

Mark S

oooo surds. No sorry cant help

lol :biggrin:

Reply 2

stop-drop-n-lol

are they that hard....

dam this friggen college they buggerd up my ema aswell... :mad:

Reply 3

Kicky

I think surds are like sqaure and cube roots.

What part of the topic have they done? as we spend about 5 lessons on surds at my school.

Reply 4

stop-drop-n-lol

i think they covered just the mutiplication of surds and using pythagoras theorem to solve them... :dontknow:

Reply 5

Kicky

the rules for the multiplication of surds are that the square root of a x the sqaure root of b = the sqaure root of ab

eg. square root of 2 x the sqaure root of 3 = the sqaure root of 6

Reply 6

~NC~

Surds are irrational numbers, they are numbers which cant be written as a fraction. An example of a surd is √2.
There are two rules when mutliplying surds: Here they are:
√ab = √a x √b

and

√a √a
-- = ---
b √b
Where a and b are numbers, i hope that helps a little bit, pm me if you need any more help.

Reply 7

stop-drop-n-lol

o rite...didnt know it was that simple....

thanks alot!
u can have some of my worthless rep :biggrin:

Reply 8

~NC~

Did it help you then? I had to cover it in my first lesson, therefore that was good revision for me too! They arent that hard once you have the rules.

Reply 9

Gaz031

See: http://www.mathsrevision.net/alevel/pages.php?page=40

Reply 10

stop-drop-n-lol

just saw ur reply nuchopper thanks....w00t getting easy now. rep u 2moz

Reply 11

~NC~

Lol, it is not too hard once you get used to it! I used to find it impossible, unti li read the page on it in the C1 text book! If you have the book read it, it is very helpful and gives some examples.

Reply 12

Kicky

Nutchopper, how do you get the square root symbols in your post?

Reply 13

~NC~

I typed them in on word and copied and pasted them!!! Its a long way but it is effective :biggrin:

Reply 14

stop-drop-n-lol

thanks...i havnt got any text books yet....she just gave me a library card and said go and find some. :motz:

Reply 15

~NC~

Ok well if you do get one read the page on surds, im not sure if you will get the same as me but the one i have got Core mathematics (C1) is really helpful and explains it all with worked examples and questions you can attempt! It even comes complete with examples.