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o lol k thanks....

just got one more thing..to do with surds and pythagroses theorm (sp)

if the base is √5 and height is 1 how do u work out the hypotonuse. ?

just got one more thing..to do with surds and pythagroses theorm (sp)

if the base is √5 and height is 1 how do u work out the hypotonuse. ?

Nutchopper

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.

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.

Bloody hell nutchopper, you're so damn smart.

This is all chinese to me.

Bloody hell nutchopper, you're so damn smart.

thanks any way....i just surf the web for some more explanations

i did intermediate gcse for maths so we didnt cover it....i got a B for maths so I was told I should be able to handle the work...hopefully

cheers.....i think im gonna go the library and get a few books out...

thanks help peeps.

thanks help peeps.

GiBB

o lol k thanks....

just got one more thing..to do with surds and pythagroses theorm (sp)

if the base is √5 and height is 1 how do u work out the hypotonuse. ?

just got one more thing..to do with surds and pythagroses theorm (sp)

if the base is √5 and height is 1 how do u work out the hypotonuse. ?

$h^{2}=(\sqrt{5})^2+1^2=6$ and so $h=\sqrt{6}$ as $h>0$

A small note: $\sqrt{a+b}$ is NOT equal to $\sqrt{a}+\sqrt{b}$ - that's one of the more common mistakes along with the false statements $(a+b)^{2}=a^2+b^2$ and $\sin (A+B)=\sin A + \sin B$

^^ we havent done those yet, we also started Surds too, kinda confusing but easy to begin with.

Gaz031

$h^{2}=(\sqrt{5})^2+1^2=6$ and so $h=\sqrt{6}$ as $h>0$

A small note: $\sqrt{a+b}$ is NOT equal to $\sqrt{a}+\sqrt{b}$ - that's one of the more common mistakes along with the false statements $(a+b)^{2}=a^2+b^2$ and $\sin (A+B)=\sin A + \sin B$

A small note: $\sqrt{a+b}$ is NOT equal to $\sqrt{a}+\sqrt{b}$ - that's one of the more common mistakes along with the false statements $(a+b)^{2}=a^2+b^2$ and $\sin (A+B)=\sin A + \sin B$

WTF!! noooooooo my brain!!!

i just got some books on surds and ive got how to do it now!

lol. I have managed to grasp a fundamental understanding of surds, but I am having trouble working out how to put questions that involve a√b in the simplest form.

Examples of question.

A) 5√7 - 2√7

B) 3√7 + √28

C)3√22 X √33

D) 10

____

√7 - √2

If anyone can show me how to solve any of the above that will be much appreciated. Maths homework in for tomorrow, fun times.

Thanks.

Examples of question.

A) 5√7 - 2√7

B) 3√7 + √28

C)3√22 X √33

D) 10

____

√7 - √2

If anyone can show me how to solve any of the above that will be much appreciated. Maths homework in for tomorrow, fun times.

Thanks.

Cb.Incus

lol. I have managed to grasp a fundamental understanding of surds, but I am having trouble working out how to put questions that involve a√b in the simplest form.

Examples of question.

A) 5√7 - 2√7

B) 3√7 + √28

C)3√22 X √33

D) 10

____

√7 - √2

If anyone can show me how to solve any of the above that will be much appreciated. Maths homework in for tomorrow, fun times.

Thanks.

Examples of question.

A) 5√7 - 2√7

B) 3√7 + √28

C)3√22 X √33

D) 10

____

√7 - √2

If anyone can show me how to solve any of the above that will be much appreciated. Maths homework in for tomorrow, fun times.

Thanks.

there's this great thing called the maths forum. anyway...

a) 5√7 - 2√7 = 3√2

b) 3√7 + √28 = 3√7 + √2√2√7 = 3√7 + 2√7 = 5√7

C) 3√22 * √33 = 3√2√11√3√11 = 33√2√3 = 33√6

d) 10/(√7 - √2) = 10/(√7 - √2) *(√7 + √2)/(√7 + √2) = (10(√7 + √2))/(7 - 2) = 2(√7 + √2)

Thanks Chewwy.

I shall pop in to the Maths forum if I need further help, but on this occasion I thought I would post my questions in this topic, as related discussion.

would you like positive or negative rep? I could try and boost you back up to green or carry on with the red ? (Some people prefer to go different ways ?)

I shall pop in to the Maths forum if I need further help, but on this occasion I thought I would post my questions in this topic, as related discussion.

would you like positive or negative rep? I could try and boost you back up to green or carry on with the red ? (Some people prefer to go different ways ?)

Cb.Incus

Thanks Chewwy.

I shall pop in to the Maths forum if I need further help, but on this occasion I thought I would post my questions in this topic, as related discussion.

would you like positive or negative rep? I could try and boost you back up to green or carry on with the red ? (Some people prefer to go different ways ?)

I shall pop in to the Maths forum if I need further help, but on this occasion I thought I would post my questions in this topic, as related discussion.

would you like positive or negative rep? I could try and boost you back up to green or carry on with the red ? (Some people prefer to go different ways ?)

preferably red, because it makes me look like a rebel.. however don't worry about it, save your rep for some more deserving soul.

GiBB

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

my .......n then but im so confused on what they are and how to do them...

can any one help me before 2moz please

my .......n then but im so confused on what they are and how to do them...

can any one help me before 2moz please

This might be a useful link

http://www.mathsnet.net/asa2/2004/c12surd.html

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