Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#1 2006-10-17 01:37:11
- dericteong
- Member
- Registered: 2006-10-16
- Posts: 13
Surd
Pls.. how to solve this..
Offline
#2 2006-10-17 02:25:26
- luca-deltodesco
- Member
- Registered: 2006-05-05
- Posts: 1,470
Re: Surd
The Beginning Of All Things To End.
The End Of All Things To Come.
Offline
#3 2006-10-17 02:31:23
- dericteong
- Member
- Registered: 2006-10-16
- Posts: 13
Re: Surd
Thx luca for ur fast response.
But I don't understand.
Could u explain more...
Or is there any reference for this kind of operations.
Thank you very much.
Offline
#4 2006-10-17 03:17:06
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: Surd
First Luca was just expanding out the brackets.
The first term has two √3's multiplied by each other, which just makes 3. This is also multiplied by 2, so the whole first term is 6.
The next 2 terms can be combined into (-10+1)√3, which is just -9√3.
And after you've manipulated the first term into 6, you can add the -5 to that to get 1.
And so then your final answer is 1 - 9√3.
Why did the vector cross the road?
It wanted to be normal.
Offline
#5 2006-10-17 03:46:00
- dericteong
- Member
- Registered: 2006-10-16
- Posts: 13
Re: Surd
First Luca was just expanding out the brackets.
The first term has two √3's multiplied by each other, which just makes 3. This is also multiplied by 2, so the whole first term is 6.
The next 2 terms can be combined into (-10+1)√3, which is just -9√3.
And after you've manipulated the first term into 6, you can add the -5 to that to get 1.
And so then your final answer is 1 - 9√3.
Thanks for explanation.. Mr. Mathsyperson.
I will put more hardwork on this. 
Offline